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• through a narrow crevice on the southeast side and through a somewhat larger opening on the northeast side. The area beneath the overhang encompasses approximately 7 m (77 square feet). No artifacts were found in the rockshelter or in the surrounding area. Features such as hearths are absent; indeed, no soot is present on the roof of the rockshelter. Small holes were dug by trowel near the back and near the center of the rockshelter, and near the wall base. The holes near the back and near the center indicated very shallow soils, ' between 0 and 10 cm deep (0 to 4 inches). Soils were deeper near the base of the wall. There, very rocky soil extended to at least 20 cm (8 inches) below the present ground surface. It is possible that soil was deposited near the base of wall in an effort to level the floor. No artifacts were recovered in the subsurface probes. The absence of artifacts and cultural features other than the wall makes determination of site function and cultural affiliation difficult.. Extant evidence suggests, however, that the site represents historic activities. The site may have been used by a sheepherder, who was compelled by his job to spend much time with his flocks as they grazed. A shelter such as the site would permit protection from the elements with relatively little investment of labor for construction, while providing easy access to the flocks. In tfris scenario, the site was probably used intermittently and for short periods of time. Domestic activities prob- . ably occurred at a distant tent or trailer, as evinced by the lack of artifacts and features. If the site is associated with sheepherding activities, it probably dates to the twentieth century. Sheep were not present in large numbers in northwestern Colorado until the early 1900s (Athearn 1975). The good condition of the masonry wall suggests that it was constructed, or at least has been maintained, within the past 50 years. It is unlikely that 5h1F2253 represents the activities of aboriginal peoples. Prehistoric masonry structures are generally attributable to the Fremont culture, which occupied most of Utah and portions of north- western Colorado between approximately A.D. 600 and 2300 (Grady 1984). The Fremont cultivated corn, manufactured pottery, and constructed pit- houses and adobe and masonry surface structures. The Fremont constructed storage facilities, often called yranaries, beneath natural rock over- hangs, but these tend to be circular or semi-circular in shape, and were generally constructed with mortar or plaster (Creasman 1975; Grady 1984). Architecturally, then, Fremont storage structures differ significantly from that represented at 5P4F2253. Archaeological investigations conducted by others in the area further suggest that Fremont sites are scarce (see Christensen 19II4; Kainer 1983). Gordon et al. (1982) suygest that Fremont occupation in northvestern Colorado is concentrated irr Dinosaur National f•Sonuinent, Canyon Pintado south of Rangely, and the Texas-llissouri Creek-Evacuation Creek area west of Canyon Pintado, and that intensive Fremont activity did not occur in the vicinity of tire Danforth fli 115. • SITE EVALUATION Evaluations of site significance are generally based upon criteria 4