Precontact Use of Tundra Zones of the Northern Cascades Range of
Transcription
Precontact Use of Tundra Zones of the Northern Cascades Range of
• - ARCHAEOLOGY IN WASHINGTON VOLUME VII 1999 • Association for Washington Archaeology Archaeology in Washington [Vol. VII 1999] PRECONTACT USE OF TUNDRA ZONES OF THE NORTHERN CASCADES RANGE OF WASHINGTON AND BRITISH COLUMBIA Robert R. Mierendorf '• • < i Abstract Archaeological site survey and excavation data from the northern Cascade Range of Washington and British Columbia is used to assert extensiveprecontact exploitation of a regionally-prominent belt of tundra that spans the subalpine and alpine vegetation zones. Preliminary data are described from 37 tundra belt archaeological sites in North Cascades National Park Service Complex (the park) and from three excavated sites. Adensity of3.7sites/km2 was observed in 10.01 km2 ofpark lands above 1,219 m < , (4,000ft) elevation. Aseries of radiocarbon dates on anthropogenic charcoalfrom one site indicates more or less continuous use of the subalpine for at least 4,500years. A high relative site density ispredictedfor tundra zones, with region-wide temporal and spatial variations in density reflecting the size and distribution of lowland populations in relation to adjacent mountain physiography. Within the tundra belt, the highest site density ispredictedfor the subalpineforest-meadow ecotone and the lowest densityfor the alpine. Ethnographic and ethnohistoric information about postcontact indigenous use of the tundra belt is scattered and fragmentary, but remains a rich source of information about those Salish bands strongly oriented to use ofmountainous interior. Although not used intensively compared to lowland areas, tundra belt archaeological assemblages reflect regional-scale variations in human demography, climate, mountain physiography, and subsistence resources. INTRODUCTION a large area of the Pacific Northwest that influenced, and was influenced by, indigenous *' t There are extensive treeless openings in the populations. Generally, there are two sources of higher elevations of Pacific Northwest forests that information about precontact use of the form abroad regional zone of meadows and open mountainous interior: the postcontact terrain. For convenience, these subalpine and alpine vegetation zones are together termed the ethnographic and ethnohistoric records of indigenous people and data recovered from indigenous people is a topic unexplored in any North Cascades), a mountain-oriented subsistence "tundra belt" to recognize the continuity in archeological sites. Although detailed meadow communities across this landscape above ethnographic information is lacking for large the forest. The traditional use of this terrain by areas of the interior northern Cascade Range (the detail by Northwest Coast anthropologists and pattern for those Coast Salish bands living in the archeologists. As a result, even rudimentary upper reaches of major valleys has knowledge is lacking about the precontact use of Robert R. Mierendorf, Archeologist, North Cascades National Park, National Park Service, Marblemount, WA ; been asserted (Collins 1974, 1980; A. Smith 1988). Until recently, no archaeological evidence temporal variations in the archaeological record of the tundra belt. has been available from the tundra belt to address Tundra belt environment and ecology are limiting the question of its precontact use. Using to aspects ofhuman settlement and subsistence in preliminary data from the North Cascades (Figure ways that coastal and adjacent riverine 1) my objectives are to 1), briefly characterize environments are not. Perhaps the single most some aspects of the tundra belt ecology and prominent physical feature is the rugged prehistory of the North Cascades of Washington topography, which exhibits extreme relief and southern British Columbia 2), to consider the between local valley bottoms and adjacent implications of archeological data for summits (relief often exceeds 858 m/km). The understanding indigenous subsistence in the larger North Cascades sustains the largest number of region by proposing long-standing use of this active glaciers below the 49th parallel, and due to distinctive landscape, and 3), to offer several deep glacial incision, the range appears as a general predictions regarding regional and Figure 1. Regional plan view map ofthe Pacific Northwest showing North Cascades National Park Service Complex jumbled mass of peaks and ridges separated by deep, narrow valleys. Climate is moist and maritime, resulting in average annual snowfalls of ca. 13 m (43 ft); elevation of upper treeline is generally defined by a shortened growing season caused by late-persisting snow pack (Arno and Hammerly 1984). Elevations are moderate, the highest nonvolcanic peaks attaining ca. 2,900 m while the highest of two volcanoes is 3,286 m, so that hypoxia is not an important influence on human use. The upper timberline, varying from ca. 1,370 m on west slopes to 1,830 m on the east (average of 1,600 m), defines the lower boundary of a broad and regionally prominent belt of tundra vegetation (Arno and Hammerly 1984:112). more with the Olympic Mountains and the Coast Range of British Columbia than with the Cascades of southern Washington, Oregon, and California or the Rocky Mountains. North Cascades climate, flora, and fauna affiliate treeline, above which trees cannot survive. At the upper timberline (the end of the closedcanopy, upper montane forest) (Figure 2) begins a patchwork of tree islands surrounded by alpine tundra which is comprised of several meadow communities classified by dominant vegetation cover as 1) heath shrub or heather-huckleberry, 2) lush herbaceous, 3) dwarf sedge, 4) rawmark and low herbaceous, and 5) grass (Franklin and Dyrness 1988). With increasing elevation, tree islands are reduced in size and number up to the / / Treeline b=»™^ Z-. / —*-•——"" ^N. \ Subalpine Tundra \ &Tree Islands ^^^500 m(1600 ft) Timberline Alpine Tundra "" Upper Montane Forest Valley Bottom \ Lower Montane Forest Figure 2. Schematic diagram of mountain vegetation zones in the North Cascades \ snowshoes and Skagit hunters would haul canoe Worldwide, most mountain ranges exhibi an loads of dried meat down the Skagit River in abrupt transition between timberline and treeline, exchange for Puget Sound products (Haeberlin but in Pacific Northwest ranges, this transition is and Gunther (1930:20). Now as in the past, unique for being wider than anywhere else tundra constitutes the summer pasture for many (FraUnandDyrness 1988:248-249;Meberg forest ungulates, so that the extent and condition 1991-326). Here it spans up to 500 m(1,640 ft) of subalpine meadows must have had some of elevation and forms a vast mosaic of tree influence on ungulate populations, and thus, on groupings, tundra, cliffs and buttresses, avalanche indigenous subsistence hunting (beginning in the slopes and gullies, rock fields, cirque lakes postcontact period, and continuing in the present, wetlands, and waterfalls, the alpine equivalent of portions of the North Cascades tundra served as the "muskeg" in arctic tundra of the far north pasturage for sheep, adomesticated ungulate). (Polar and MacKinnon 1994:19). Excluding valley bottoms, the low elevation part of the Important subsistence plants include berries subalpine exhibits the greatest number and edible roots and greens, and pine nuts. Berries ot diversity of habitats and species, the most the genus Vaccinium, dominant tundra shrubs in biological productivity, and it i. where> most many North Cascades meadow communities, are grazing occurs in the mountains (Price 1981.290). high in sugar and are preserved by traditional Much of subalpine diversity is due to topographic drying technologies (Mack 1992 and 1998). variability. In contrast, the continuous forest (Human foragers are not the only ones attracted to below the subalpine and the treeless alpine tundra subalpine Vaccinium, as early each fall, the North above it are characterized by low ecological Cascades tundra belt is roamed by bears who diversity (Burtchard 1998). SUBSISTENCE ECOLOGY satisfy their pre-denning hyperphagia by consuming enormous quantities of sugar-rich huckleberries). Bulbs and corms of wild lilies dug from meadows, especially Spring Beauty lanceolata) and glacier lily An abundance of animal, plant, and mineral (Claytonia (Erythronium grandiflorium) were sources of resources in tundra zones were available to dietary starch. pine (Pinus indigenous people in the summer and fall. During albicaulis), abundantWhite-bark in some Subalpine forests, summer, the subalpine is populated by fauna was valued for its large nuts. Meadows were also important to subsistence, including deer, a source of medicinal plants (A. Smith 1964 and mountain goat, elk, marmot, bear, ptarmigan, 1988; Blukis Onat 1988), two important ones grouse, and raptors. Though important for food, being members ofthe herbaceous meadow type so fauna also were a source of utilitarian materials, common in the western North Cascades (Douglas 1972). Sitka valerian (Valeriana sitchensis) was highly valued blankets); fur and hide; horn, antler, used to treat wounds, burns, sores, ulcers, and tooth, hoof, and sinew; and fat. In the postcontact stomach problems (Pojar and MacKinnon 1994, period, the North Cascades was known for its Turner et al. 1990). Indian Hellebore (Veratrum good hunting. Communal hunting was common, viride), an extremely poisonous plant, was used to with task groups created through alliances among treat colds, arthritis, phlebitis, broken bones, and separate villages and bands (Anastasio 1975). venereal disease (Pojar and MacKinnon 1994, The eastern slopes of the North Cascades were Turner etal. 1990). Due to extensive outcrops of known to produce a surplus of animal products bedrock, many useful rock and mineral resources including goat wool (which was woven into traded by local Chelan, Wenatchi, and Methow were procured in the tundra zones, including bands in the regional exchange system (Anastasio vitrophyre (a variety of obsidian), dacite, chert, 1975). In the western interior of the North and quartz crystals (Mierendorf and Skinner Cascades, Snoqualmie bands hunted on am^^nm 1997). The tundra belt of the North Cascades was likely first utilized during the early-Holocene, in the annual round of foraging people who practiced an economy based on exploitation of a wide range marine and terrestrial resources, including those from the mountains. During the early and midHolocene, the Pacific Northwest landscape was more open compared to today, and it supported more open forests and large expansive prairies (Brubaker 1992, Whitlock 1992). Near the end of the mid-Holocene began a cooler and moister neoglacial climate that resulted in eventual closure of the forest canopy, with consequent reduction of browse for large ungulates. Schalk (1988) suggested that this change was accompanied by a decrease in use of the Olympic Range subalpine by the increasingly sedentary but more complex cultures of the late-prehistoric period. Specifically, he suggested that these less mobile, logistically-organized groups would have had little incentive to use the high country join in the alpine summits that form the core of today's park. All data were collected after establishment of the park by Congress in 1968. The sample consists of 37 prehistoric sites and 15 isolated remains from a measured land area of 10.01 km2 (2,495 acres). This total area is comprised of many small tracts surveyed between 1977 and 1998 in the park's tundra zone (all survey tracts counted in the total are above 1,219 m [4,000 ft] elevation). A data base of all recorded tundra belt sites in the North Cascades ecosystem, regardless of ownership and political boundaries, would be more meaningful, but currently does not exist. These data are not a statistically representative sample and are likely biased by several factors, including low site visibility, which is obscured by dense tundra and forest cover and by volcanic ash deposits (tephra) from late-Holocene eruptions of Cascade Range volcanoes. Mean site density is 3.7 sites/km2 (individual survey tracts exhibit a wide range of density because high-ranked ungulates, particularly deer values). Although comparable data are few, a and elk, would have been most efficiently hunted density value of 3.7 is within the range (1.5 to 7.8 in the valley bottoms. This argument makes sites per km2) measured in other western intuitive sense given the great savings in energy cordillera tundra zones (Mierendorf 1986:104). to hunters who let winter snow drive ungulates to lower elevations, ascompared with the high costs ofa strategy requiring travel from valley bottoms The aggregate site sample is described by vegetation zone (Table 1), landform type (Table to subalpine meadows of hunters and their gear, and their return trip loaded with supplies. material type (Table 4), and attribute means 2), physical site type (Table 3), quarried lithic from (Table 5). Attributes of the sample of isolated cultural artifacts and features are provided also archeological surveys in the North Cascades (Table 6). Most sites have been inventoried in Nevertheless, as evidence accrued beginning in the 1980s, it began to appear that there had been extensive use of the subalpine in the late-prehistoric period. In the following sections, preliminary survey and excavation data from North Cascades National Park Service Complex (the park) is summarized. ARCHEOLOGICAL SITE SURFACE DATA meadow communities of the subalpine (sample mean elevation is 1,667 m [5,481 ft]), but some are occasionally found in subalpine forests. The data show the majority of sites are small scatters of flaked stone remains found on landform types of the subalpine. Many are located above passes and in difficult and exposed terrain, rendering simple travel across the mountains an implausible explanation for their occurrence. Archeological survey data are from three contiguous watersheds, those of the Skagit, Fraser, and Columbia Rivers, whose headwaters . diverse Lithic artifacts reflect tool manufacture and use, the procurement and reduction of stone materials, and other resource is represented by blades and cores from a few TABLE 1. SITES BY VEGETATION TYPE sites. Artifacts flaked from exotic lithic materials, Vegetation Zone always high quality types, appear as finished tool fragments and as pressure flakes. The locallyprocured lithic types indicate bipolar core and Number Percent 4 11 Subalpine 33 89 biface reduction strategies that left large pieces of Totals 37 100 debitage compared to the exoticstonetypes. This suggests patterned variation in function and technology by lithic material type. Pit features Alpine are found hollowed out of natural rock fields in TABLE 2. SITES BY LANDFORM TYPE talus and on moraines in both the subalpine and Number Percent 19 51.4 alpine. Calcined and burned animal bone is sometimespresent in campfirehearthsexposedon Glacial moraine/bench 8 21.6 site surfaces. Overall artifact and feature diversity Pass 4 10.8 Landform Tvoe Ridge crest Cirque basin or lake 3 8.1 Steep slope 2 5.4 Avalanche fan/cone 1 2.7 37 100 Totals is low. A preliminary impression is that the simple tool assemblages represent repair or construction of travel gear and clothing, domestic activities associated with short-term camping, and the preparation and handling of locally procured resources. TABLE 4. QUARRIES BY LITHIC TABLE 3. SITES BY PHYSICAL TYPE Site Type Number Percent 24 64.9 Quarry 7 18.9 Rockshelter w/lithics 2 5.4 Pit/depression 2 5.4 Rock cairn 2 5.4 37 100 Lithic scatter Totals MATERIAL TYPE Material Type Number Percent Vitrophyre/Obsidian 6 86 Quartz Crystal 1 14 Totals 7 100 The sample of sites from the park covers only a small part of the total of North Cascades tundra. Beyond the park, the occurrence of sites inventoried on adjacent U.S. Forest Service and provincial lands makes it clear that precontact use of the tundra zones must have been widespread processing activities. Some sites lack chipped stone altogether but reveal features that reflect cooking, storage, and use as hunting blinds. Vitrophyre and quartz crystal are two stone materials that were quarried from the tundra belt in the park (Mierendorf 1987; Mierendorf and Skinner 1997). The sample of chronologically diagnostic artifact types is small. Several triangular-bladed, stemmed points match types are estimated at 4-1,000 years old. The majority across the North Cascades (see Fulkerson 1988, Hollenbeck and Carter 1986, Hollenbeck 1987, Huelsbeck and Ritchie 1994 and 1995, Sto:lo Nation 1998, Vivian 1989, and Zweifel and Reid 1991). Because a small proportion of the tundra belt area has been surveyed, the claim for extensive use of the high country is only qualitatively supported. Comparable survey information from mountains beyond the North Cascades also support the claim, such as from the Olympic Range (Bergland 1984, Schalk 1988, of time sensitive forms are small, side-notched or stemmed arrow points; these same types are associated with radiocarbon dates of 300-600 B.P. from sites in the lower montane forests of the park (Mierendorfetal. 1998). Microblade technology Wessen 1993) and the southern Cascades of 8 Washington (Burtchard 1998, Rice 1969, Mack 1998, McClure 1989). I believe these data prehistoric features. foreshadow Pacific 6,600±90 B.P. was recovered from charcoal Northwest mountains of extensive precontact use of subalpine and alpine meadows. below the artifacts and was presumably derived the occurrence across TABLE 5. SAMPLE ATTRIBUTE MEANS Attribute Mean Elevation m (ft) 1671 (5481) Sample Size (N) 37 Mean Site Area (m2) 1667 TABLE 6. ATTRIBUTES OF ISOLATED ARTIFACTS AND FEATURES Mean elevation m (ft) 1754(5755) Subalpine % (n) mean elevation m (ft) 64(10) 1662 (5450) Alpine % (n) mean elevation m (ft) Flaked objects % (n) Pit/depression % (n) 46(5) 6330 1940(6364) Total number 87(13) 13(2) 15 ARCHEOLOGICAL SITE EXCAVATION DATA In the North Cascades tundra even fundamental characteristics of archeological site structure and chronology are unknown because systematic excavation has not begun. In all of the North Cascades of Washington, only three subalpine siteshave been test-excavated . The first of these, 45WH223, is at Damfino Lakes (McClure and Marcos 1987) on the Mt. Baker-Snoqualmie National Forest. At 1,365 m, the site is in a saddle between the headwaters of Canyon Creek (Nooksack River basin) and Damfino Creek (Chilliwack River basin). A volume of 1.85 m3 was excavatedfrom 12 1X1 m square units (3 mm [1/8 in] mesh screen). A total of 185 artifacts was recovered from the site. No formed tools, tool fragments, or flakes showing evidence of use were found and neither were faunal remains or A radiocarbon date of from a natural forest burn. Most of the lithic assemblage was classified as basalt, but there was one item of chert and one of vitrophyre (this last type is similar in appearance to a source described by Mierendorf [1987:24] located 27 km to the east). The authors concluded that 45WH223 reflects short-term use, possibly from a single event. The site was assessed as eligible to the National Register of Historic Places. The second site is at Silver Lake, ca. two miles south of the historic mining town of Monte Cristo (Blukis Onat and Hess 1990) in Mount BakerSnoqualmie National Forest. It is located at 1,311 m elevation on a cirque lake moraine in the North Fork of the Skykomish River's watershed. Due to arsenic-bearing deposits near Silver Lake, the waters are reported to be lifeless and poisonous (Blukis Onat and Hess 1990). The site was recorded after discovery of a cryptocrystalline quartz scraper and a broken flake. It was later tested through excavation of four 1X1 m test units and 5 1" diameter "boreholes" (screened with 3 mm [1/8 in] mesh). No artifacts, faunal remains, features, or radiocarbon samples were recovered from below assemblage the surface. consists The of nine entire flakes. site The investigators estimated that the site is younger than 4,000 years old and represents short-term use. It was assessed as not eligible to the National Register of Historic Places. The third site, 45WH484, is located in the park, in theChilliwack Riverwatershed, which is tributary to the Fraser River of southwestern British Columbia. It sits at 1,616 m elevation on the moraine of a cirque lake above timberline (Figure 3). Test excavations were conducted by park archeology staff in 1995 and 1998. Three 1X1 m units, a IX.5 m unit, and a .5X.5 m unit were excavated, with a total volume of 1.27 nr Figure 3. Site 45WH481 (1,660 melevation), North Cascades National Park Service Complex (National Park Service Photo). screened through 3 mm [1/8 in] mesh. The site contains a high density of chipped stone remains, consisting mostly of flakes and shatter, but some excavated artifacts isca. 1,500 items. In addition, the site contains an abundance of charcoal from Tools consist of broken arrow points, a flake variation in charcoal concentrations marking prehistoric camp fires. Complexity in site diagnostic and formed tools were recovered. structure was indicated by vertical and horizontal knife, a quartz crystal, a bifacc, and a few cores. recurrent episodes of campfire use of one The flakes are predominately varieties of a restricted site area. A few tabular hearth rocks locally-outcropping vitrophyre, but there are also were recovered from the central campfire area exotic materials imported from distant sources. along with occasional fire-modified rocks. No Approximately ten different stone material types bone remains of any kind were found. are represented by color varieties of vitrophyre, chert, chalcedony, and metasediment. Debitage, The central campfire area is stratified and mostly representing procurement from nearby vitrophyre intact, with the upper three strata directly related sources, is relatively angular and large, reflecting to the site's geochronology. The uppermost of primary and secondary reduction activities. these is a thin, compacted and disturbed soil ABased on chemical analysis of trace elements, a horizon containing modern objects mixed with sample of vitrophyre artifacts from the site has prehistoric artifacts. The stratum below this is a been correlated with samples from a nearby mostly intact, black, anthropogenic. A-horizon source outcrop and associated quarry (Mierendorf containing prehistoric artifacts and charcoal and Skinner 1997). Artifacts made of the exotic, layered between two light-gray volcanic ashes. The upper ash is a primary deposit of Mt. Saint non-vitrophyre materials consist of broken tools and small pressure flakes removed during tool Helens W from an eruption dated 505 B.P. sharpening and repair. The total number of (Mullineaux 1986) while the lower one remains 10 ^JT#^'r : unidentified (there is some evidence of secondary deposition of portions of the tephras). Lithic artifacts were excavated from above, between, and below the two gray tephras, without noticeable vertical changes in artifact types or other assemblage characteristics. This stratum is ca. 12 cm thick. Based on five radiocarbon dates on anthropogenic charcoal and the position of the St. Helen's W tephra,the intact campfire deposits are between 500 and 4,500 years old (Table 7). Immediately under the campfire deposits is the third stratum, a culturally-sterile, brown sandy tephra. Field properties of this tephra resemble those described for one erupted from Mount Baker between 6,000 and 500 years ago (Hyde and Crandell 1978). A sample of this tephra collected from near Heather Meadows (southeast of Mount Baker in the Mt. Baker-Snoqualmie National Forest) was kindly provided to me by Dr. Wes Hildreth of the U.S. Geological Survey. Analysis of this sample and of one from beneath the campfire deposits, by Dr. Franklin J. Foit, Jr. at Washington State University, revealed a strong similarity in the glass chemistry of the samples, suggesting that they are both derived from the same eruptive event. Based on charcoal found encased within the tephra at thesite, this eruptive event is radiocarbon-dated at 6,060 years ago (Table 7). The co-occurrence here of stratified cultural deposits, identifiable tephra, anddateable anthropogenic charcoal provide a mid to-late Holocene cultural and geochronologic record of tundra use. The site has been determined eligible to the National Register of Historic Places. Until more data are available, it is impossible to know if the initial occupation of 45WH484 4,500 years ago has regional significance. Is it simply of Pacific Northwest tundra zones by the midHolocene. MODELING TUNDRA ZONE USE Several recently developed models of precontact land use in the subalpine of the Cascade and Olympic Ranges of Washington have utilized the regional paleoenvironmental record of the Holocene as a basis for examining forager subsistence ecology. These models consider the mid-Holocene shift from open, more xeric forests, to more mesic closed-canopy forests of the lateHolocene to trigger changes in high-ranked terrestrial resource, particularly ungulates. With increasing forest closure, grazing and browsing habitat was reduced. It is believed that one of the cultural consequences of this ecosystem shift was the eventual appearance of a collector typeof land use organization (in the sense of Binford 1980). In his model of prehistoric use of the Olympic Mountains, Schalk(1988:150) suggested: The models of land use set forth in the research design postulate that there would be little incentive for travel into subalpine settings for Late Prehistoric peoplewho practicedlanduse systems of the collector variety. It was reasoned that in terms of the structure of regional food resource distributions, Zone IV coincidence that resource intensification and the [subalpine] offered little or nothing to onset oftheethnographic Northwest Coast pattern begin to appear in lowland archaeological collectors that could not be obtained more effectively in other zones. Efficiency and scheduling considerations in collector land use systems would restrict predation on migratory ungulates to their winter ranges. assemblages at about this time (Matson and Coupland 1995)? glaciers (Denton and Porter 1970, Denton and Karlen 1973)? The earliest radiometric dates on tundra zone archaeological sites in Washington are 6,250±110 years old from the Goat Rocks Wilderness of the southern Washington Cascades (McClure 1989) and a date of 4,990±60 from Olympic National Park (Bergland 1984). Cumulatively, these data support a claim for use Why also the temporal correspondence withthe onsetof theneoglacial, a world-wide return to a cooler and moister climate characterized by expansion of local mountain 11 TABLE 7. NORTH CASCADES NATIONAL PARK SERVICE COMPLEX, RADIOCARBON AGE ESTIMATES, 45WH484 Beta Analytic NOCA Uncorrected Sample No. Sample No. Radiocarbon Age Association & Context 97235 484-SS-4 2300±100B.P. High density of chipped stone artifacts; below sidenotched arrow point; campfire charcoal High density of chipped stone artifacts; below St. 4350±50 B.P. 484-SS-3 96057 Helens W tephra; campfire charcoal 484-SS-5 96058 High density of chipped stone artifacts; quartz crystal 4470±70 B.P. artifact; from below St. Helens Wn and other gray tephra; charcoal collected from in situ, lower central campfire deposit 96059 Below campfire deposit; no associated cultural materials; encased in a brown sandy tephra from Mt. Baker; sample collected from in situ, beneath 6040±90 B.P. 484-SS-6 anthropogenic deposits 1460±110B.P. 484-SS-7 96060 Low density of chipped stone artifacts in this level; charcoal collected from in situ, outer edge of campfire area 96061 484-SS-8 3400±90 B.P. Low density of chipped stone artifacts in this level; from outer edge of campfire area; charcoal collected from tight, in situ concentration Based on my experiences in the North Cascades, woody debris, 3) unpredictable and abrupt weather changes, often limiting to high elevation travel in all seasons, and 4) long travel times between procurement sites and winter residences. The total cost, in caloric terms, to prepare and I agree that efficiency and scheduling considerations would favor ungulate hunting at lower elevations in the winter, as is true of other similar montane coniferous forests (Schalk and Mierendorf 1983 and 1984). From an optimal foraging perspective, I would even extend transport bulk resources down from the tundra was prohibitive under most circumstances. (Perhaps an alternative measure of resource value, one that included social and exchange values, in addition to calories, would serve as a more Schalk's argument (with reference to collectors only and at a regional scale) and assert that use of tundra zones for any number and combination of key resources or food staples could not be meaningful currency). justified in terms of the energy expended relative to the energy captured. Why might this be so? prehistoric collector use of the tundra belt? I suggest we reconsider a key assumption that underlies how we think about precontact use of the land: that procurement of food or other subsistence resources was the primary motivation for tundra belt use. Examples of this assumption might include optimal foraging approaches to quantifying energy of resources procured versus energy expended in their capture, or attempts to determine which procurement strategies are "embedded" in more primary pursuits. Certainly, the subalpine summer is productive and rich in One of the hallmarks of a collector strategy is the bulk processing of staples and their transport and storage near or in a permanent or semipermanent winter village. In the North So what explains late- Cascades, transportation costs to pedestrians are exceedingly high, due mostly to environmental constraints, in particular, 1) steep slopes, 2) densely forested transportation routes around and across rock precipices, river gorges, and massive old-growth 12 migratory fauna and local flora and doubtless much of human activity here did involve procurement of food and other resources, but I believe it was not profitable to do so in terms of the cost-benefit ratio measured in caloric energy (at the most local scale, however, there may have Anastasio's reference to the importance of interband task groupings and councils as a way to "regulate ecological adjustment to the natural environment and resources, economic exchange, and warfare." (Anastasio 1975:183-184). been exceptional cases). I think it useful here to In most instances, chance encounters with other distinguish between what people do, and the reasons why they do it. I propose that tundra belt use served a long-range subsistence-related need, one that was not directly tied to food or other bands were infrequent due to the very low population densities at high elevations, yet each band's claim was asserted, all the same, through oral tradition and recurring visitation. While in the tundra belt, any number of activities occurred, whether they served for subsistence, exchange, spiritualism or ceremonialism, intergroup alliances, or other purposes. While traveling the North Cascades interior, for example, Upper Skagit people expected to meet Nooksack, Stillaguamish, Thompson, Methow, or Okanogan relatives in divides between drainages (Collins resources needed for any one year or season. Precontact subsistence use of the tundra belt is likely to reflect regional demographic conditions. With increasing population and cultural complexity, a concern with definition of territory or home range boundaries may have characterized the interactions among bands occupying separate river drainages that head in high mountain massifs. I am suggesting the operation in such highlands of a cultural expression of competitive exclusion in the interaction of populous indigenous societies in the late-prehistoric period. In this view, use of the tundra belt by widelyseparated bands living in residential villages served to establish a claimand regular presence in an accustomed territory or to maintain rights to the use of an area, regardless of the actual scope 1974:80); Lane and Lane (1977:163) quote Wilson Duffs Tait Indian informant that they would meet both Thompson and Skagit hunting parties east of the Fraser River. Cultural alterations of the landscape marking such activity, intentional or otherwise, remain in the form of lithic scatters and quarries; campfire loci and cooking hearths; butchered and cooked animal remains; temporary structures, rock cairns, contribution to material wealth. Social interaction hunting blinds, and trails; storage features, and root, nut, and berry-processing features, culturally-modified trees, fire-maintained likely involved any number of bands, with separate identities and linguistic affiliations, who (for details on pre- and postcontact cultural or seasonal frequency of such usage, or its sometimes traveled long distances to exercise co- use of the highlands (in his ecological analysis of group relations in the interior Plateau, which includes the eastern slopes of the park in the North Cascades, Anastasio [1975:122-125] emphasized co-utilization of hunting areas in mountains). In the postcontact period, some meadows, rock shelters, and other modifications remains or influences in the tundra belt, see Berglund 1984; Blukis Onat 1988; Blukis Onat and Hess 1990; Burtchard 1998; Bruseth 1950; Fulkerson 1988; Hollenbeck 1987; Hollenbeck and Carter 1987; Huelsbeck and Ritchie 1994 and 1995; Lepofsky et al. 1999; Mack 1992, 1994, 1998; Mierendorf 1986, 1987, 1997; Mierendorf encounters between bands were hostile (Teit and Skinner 1997; Nagorsen et al. 1996; Pokotylo 1900:268-271), such asbetween Upper Skagit and and Froese 1983; Schalk 1988; Sto:lo Nation 1998; Turner 1991; Uebelacker n.d.; Vivian Lower Thompson bands (Collins 1974:14-15). On other occasions, social competition in tundra zones is likely to have included symbolic and ritualistic intergroup behavior. exclusion as a social 1989;Wesson 1993; Zweifel and Reid 1988). Competitive The precontact cultural expression of territorial boundaries probably developed from the mechanism underlies 13 centers, such as the west side ofthe Cascade interaction between the geography of population centers and the regional resource configuration. Range, in proximity to the Puget Lowlands, and especially the lower Fraser River valley, as compared with relatively low site densities At aregional scale, exclusionary tendencies, such as the concept of land tenure (Brush 1976), in the subalpine of the eastern North probably arose following population increases Cascades. accompanied by more intensive use ofsubsistence resources beginning in the mid to late-Holocene 2. A temporal correspondence is predicted in and served to monitor territory boundaries and to supply valued mountain resources to lowland population centers. In a sense, competition was tundra belt site density and inferred lowland for access to tundra belt resources to meet the population density: time periods characterized by high population densities in the lowlands demand for products sought in the regional exchange system. Yet, at a local scale, co-use allowed precontact bands to maintain arepertoire should correspond with periods of higher site density in the subalpine; periods of low population density in the lowlands should of subsistence, kinship, and residential options, correspond to periods of low site density in There are four conditions that together favor the exercise of "co-use rights" in the tundra belt. These are, 1) a collector type of subsistence- density is predicted to show an inverse relationship to increasing elevation, with the highest densities in the forest-meadow the subalpine. thus gaining the security that comes from maximizing land use options and subsistence niches in the catchment of interior mountain 3. Subalpine and alpine archaeological assemblages are predicted to differ in site villages. density and function. Specifically, site ecotone of the low subalpine and the lowest densities in the alpine; assemblages settlement organization (low residential mobility, bulk processing of key resources, food storage for representing short-term camping, and other winter consumption), 2) a relatively high population density in the lowlands, 3) resource domestic activities, should occur in the subalpine, while ephemeral and day-length stress, resulting in the need to broaden a resource base or the range of resource procurement activities, such as traveling, hunting, and collecting, should occur in both zones. options, and 4) high elevation and interior portions of mountain massifs form prominent DISCUSSION divides separating major population aggregates. EXPECTED PATTERNS IN SUBALPINE LAND USE Given the premise that fuller understanding of Northwest Coast subsistence and settlement is achieved by considering the entire landscape used Afinal objective is to predict, at a regional scale, by indigenous populations, the focus here on the spatial and temporal patterning in tundra belt tundra zones is heuristic. Native Northwest archeological sites during the last 4,500 or so people, like indigenous inhabitants of mountains years. The expectations are framed as general worldwide, subsisted by exploiting vertically By statements of relationship between temporal, compact biotic zones (Brush 1976). geographic, and assemblage variables, and they considering the portion ofthe montane landscape assume such factors as sampling and taphonomy are held more or less constant. that was most limiting to Native subsistence, I have sought a preliminary reconciliation of its archaeological, ethnographic, and ethnohistoric 1. Ahigher site density is predicted in subalpine data. In theNorth Cascades, at least, theproposal areas close to major lowland population for widespread tundra belt use contradicts a view 14 WA-«r. if.---htfti»'ttiitigl?g often espoused in authoritative and popular European perception of the landscape as literature from history, anthropology (including "wilderness" untouched by human influences archaeology), and mountaineering. This view (Nash 1982; White and Cronon 1988) and the would have Pacific Northwest Indian cultures so notion that there is something "irrational" about dispersed land use and tenure (Rhoades and Thompson 1975:549). In the contemporary marine and riverine-oriented that little if any use was made of the mountainous interior other than for purposes of trade, which reinforces the mistaken impression of mountains as barriers, rather than as resource use areas or tenured land, however remote from permanent settlements. Consequently, bands of Salish-speaking people have not generally been credited with the skills, technologies, and geographic knowledge to travel and subsist within the regional tundra belt. The abundance of marine resources of the Northwest Pacific Northwest view there is little acknowledgment of an indigenous tradition of high elevation use. Is there evidence supporting the view that some Northwest Coast bands were strongly oriented to the mountainous interior? I believe that a meaningful body of evidence exits; but within Coast has led some to conclude, erroneously I think, that although hunting was important for groups like the Nooksack and Upper Skagit, "The lands traditionally occupied by Coast and Interior Salish-speaking people, I am unaware of any study that directly addresses this topic. The evidence is embedded in a variety of ethnohistoric great variety of game upriver, however, does not balance the year-round supply of shellfish and sea-mammals in the salt-water areas. Hunting, and ethnographic documents and in the recollections of living Native elders. In the North Cascades, Nels Bruseth should receive credit for therefore, was of less importance than fishing throughout the Coast Salish area, including these observations beginning early in this century of inland groups." (Reid 1987:67). The absence of archaeological sites in high meadows (Bruseth ethnographic 1950:13). interest in mountain-oriented his detailed knowledge of the mountains and his A. Smith, in his compilation of subsistence is not surprising given the disruption ethnographic and ethnohistoric data for Native use and breakdown of Native cultures from disease of the park, found the evidence "remarkably and forced assimilation in the contact period, with scanty and deficient in detail." and he asked "Why in their field research ethnographers in the Pacific Northwesthave been remiss in inquiring into how the ensuing loss of traditional subsistence knowledge. Commenting on anthropologists' efforts to record what traditional knowledge was high-altitude land masses have contributed to the not lost, Suttles noted that it is difficult to traditional material, social, and religiousexistence of native American groups ..." (A. Smith understand subsistence if the investigator is "unfamiliar with the natural history of the area" and has limited research time (Suttles 1987:53). Considered from a human geography perspective, of though, indigenous populations have inhabited ethnographies, nearly every major cordillera in the world. Do the unpublished records). This he attempted through useof ethnobotanicalstudies of mountain-adapted 1988:307). He suggested that information relevant to tundra zone use could be "teased" out North Cascades somehow deviate from this pattern, or is there evidence relating to mountainoriented subsistence? These questions are appropriate considering the anthropological ethnohistoric groups such documents archival as the (including documents, Nlakapamux and (Lower Thompson) of British Columbia but he was only partly successful (A. Smith 1988). Blukis Onat (1988:36) suggested that more references to Native use of the high country are found in interest in human use of tundra zones in Europe (Brush 1976, Rhoades and Thompson 1975:535). But in the North Cascades, as elsewhere in North explorers' journals than in ethnographies and that some living elders retain ancestral knowledge of such areas. In a recent review of ethnographic America, current ideas about precontact use of mountains are undoubtedly biased by the 15 bands (M. Smith 1941:205), hunting was just as resources of Olympic National Park, Wray important as fishing and cross-country travel by fl997-54) determined from interviews with land was commonplace, more than for the Klallam tribal members and from anthropological saltwater, river, and prairie types. Smith believed field notes that use of the Olympic Mountain that these inland groups defined a separate interior was common. In astudy in progress in province, centered in the Cascades of the North Cascades of British Columbia, the Washington, that deviated in significant ways knowledge of Sto.lo Nation elders and from the rigid characterizations embodied in the paleoecological data are being combined to culture-area concepts of Northwest Coast and document the history of burning in subalpine Plateau (M. Smith 1956). The influence of meadows, atraditional management practice to Smith's foothills concept can be seen in enhance production of Vacinnium (Lepoftky et al. Swanson's (1962) later attempt to synthesize 1999) However fragmentary or dispersed, archeological data from the Columbia Plateau, in ethnohistoric and ethnographic accounts are arich which he proposed a Northern Forest Culture source of information regarding Salish use of the based on hunting on both slopes of the Cascade mountainous interior. Range beginning ca. 3,500 years ago (Swanson 1962-83) Without attempting a tun Fundamental to understanding the mountain characterization here of what constitutes a orientation of Salish-speaking peoples is a mountain-oriented land use system, some key detailed knowledge of the environmental and ecological complexity of the mountainous interior. This complexity is seldom acknowledged in precontact models, so that elements would include, 1) a detailed and constantly-updatedknowledge oflocal conditions in specific mountain valleys and across altitudinal zones, 2) adependence on terrestrial and riverine unqualified use of the term "uplands" masks the subsistence resources (the latter with and without montane habitat diversity and subsistence salmon), 3) winter travel and hunting on potential that indigenous populations exploited. snowshoes, 4) much caching of tools, gear Lack of familiarity with cultural strategies resources, and canoes at strategic locations, 5 adapted to montane habitats, I suspect, biases maintenance of a variety of intergroup soc.al current interpretations about how chmatic (kinship, exchange, warfare) and subsistence variables influenced precontact settlement relationships with other bands sharing use of the patterns, such as the assertion that excessive same areas, 6) dispersed village locations rainfall in the mountains (in this case, 100 cm reflecting the importance of solar exposure, cold annually) discouraged winter habitation of the air drainage, flooding, and avalanche history in Wenatchee Lake pithouses (Galm et al. 1992:3). addition to resource considerations in selecting Mean annual precipitation has little relevance to winter settlement location, 7) frequent summer the settlement decisions ofindigenous people, it subsistence use of the tundra zones (and other the high density of Native populations in the vast biotic zones), and 8) awide range of settlement coastal rain forests ofthe western Cascades is any types, from permanent residential villages at measure (Kroeber 1939:142 noted that early strategic physiographic and resource-controlled postcontact population densities in areas ot locations to short-term, bivouac camps in difficult western Washington exceeded those ofthe eastern terrain. Plateaus by two to nine times). The strongest evidence in the North Cascades for precontact use of the mountainous interior comes adaptation comes closest to recognizing the from the upper Skagit River Valley in the park. interaction of interior mountain-adapted bands Here, extensive use of local resources (salmon M Smith's proposal of a"foothills" or "inland with their environments (M. Smith 1941). For cannot reach this upper segment of the Skagit groups typed as "inland", particularly the Skagit 16 .•.-M~...i!;.*a.'*af' alBHSH*' River) spans the last 7,600 radiocarbon years, and although the valley bottom is only ca. 427 m ecology is strong. A large number of archaeological sites, some containing the burned remains of mountaingoats in cooking hearths and others chipped stone debris reflecting subalpine soils, yet artifact-rich, stratified cultural deposits and anthropogenic features characterize some sites. A sequence of five radiocarbon dates on anthropogenic campfire charcoal at one site demonstrates at least 4,500 years of recurrent use. Though preliminary, the data meaningfully address questions regarding indigenous use of high elevation Pacific Northwest Coast mountain procurement and reduction of localized stone zones. (1,400 ft) elevation, the influence of the surrounding alpine summits on local subsistence sources, indicate a hunting tradition spanning at least two millennia and a close familiarity with interior resources (Mierendorf 1993, Mierendorf et al. 1998). No evidence for season of occupation was found, but Lower Thompson informants a hundred yearagotold of winter-long hunting trips to the valley (Teit 1900). At Desolation chert quarry, the largest of many quarries in the valley, the most intensive use occurred between 5,000 and 3,500 radiocarbon years ago (Mierendorf 1993). Other From a regional perspective, precontact use of tundra zones cannot be understood solely on the basis of the structure (temporal and spatial) of subsistence resources and their potential productivity. This is because tundra belt use is also sensitive to the broader geographic relationships between mountain physiography, human demography, climate change, and sociocultural factors. Employing the assumption that use of the mountainous interior is likely to reflect region-wide cultural processes, testable predictions are offered regarding regional-scale, investigations demonstrate precontact use of the upper Skagit River Valley immediately to the north in British Columbia (Rousseau 1988, Bush spatial and temporal variation in archaeological 1997). assemblages. Spatially, tundra zones in close proximity to large lowland population aggregates are predicted to have a higher site density compared with those located distant from large Archaeological site survey and excavation data populations. Temporally, tundra zones are from the North Cascades is used to assert predicted to have a high relative site density extensive precontact exploitation of the tundra during periods of high population density in the belt. Only a fraction of this regionally prominent, lowlands, and conversely, a low density during treeless landscape has been sampled by periods of low population. Finally, tundra belt archaeologists, yet the data permit preliminary site density is inversely related to elevation, with consideration of aspects of precontact settlement the low elevation, subalpine predicted to have the and subsistence that are largely unrecorded in highest density, and the alpine the lowest. I postcontact ethnographies and ethnohistories. believe that regardless of the small population Generally, archaeological assemblages from the size of precontact interior mountain bands tundra zones are small and simple, reflecting compared with their coastal, river, and prairieconstruction and repair of tools, travel gear and oriented peers, the near-absence of a postcontact clothing, food preparation associated with short- indigenous history of settlement and use in the term camping, and local resource procurement North Cascades renders regional significance to and utilization. The location of many sites above archeological assemblages of the tundra belt. The passes, in difficult terrain, suggests that travel information embodied in precontact through the mountains cannot solely explain the archaeological sites is likely to extend our distribution of sites. 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