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The legal location of the project is TBS, R66W, SW;f and SE~f, 6)W~, Sec. 27; S'~, S~'e, Sec. 28; SE'k, SW~.f, Sec. 29. Figure 1 shows the general location of the project. Figure 2 shows the project location on the Castle Rock South 7.5 Minute Topographic Quadrangle. Figures 3 and 4 show the project on the Centennial Materials orthophoto map, 1 in = 500 feet. Overview photos of the area are shown on figures 5 and 6. SIELD INVESTIGATIONS The cultural resources inventory was conducted over six days, January 19, 26, and 27, February 27, and March 5 and 12, by Judi. Halasi. Mr. Jim Barrett assisted in the field by showing the ' project location and by flagging and staking area boundaries and the road alignments. BACKGROIIND The following gives a brief summary of the environment, prehistory, history, and review of previous cultural resources in the project area. ENVIRONMENTAL DATA The Winkler Light Aggregate Quarry is in a transition area between the Front Range Mountains of central Colorado and the High Plains of eastern Colorado. This area is within the Colorado Piedmont of the Great Plains Province (Fenneman 1931). The Colorado Piedmont lies between the South Platte River on the north and the Arkansas River on the south. A high divide, extending eastward from Palmer Lake, separates the drainage system of the South Platte from the drainage system of the Arkansas River. Both of these river systems have cut deeply into the Tertiary (65 to 2 m.y. old) sedimentary rock and removed much sediment. The major tributary that drains the project area is Cherry Creek, which is in the primary drainage system of the South Platte stream system. Cherry Creek lies northwest of the project area, and Willow Creek, an intermittent drainage into Cherry Creek, is at the west end of the project area. Cherry Creek is fed by intermittent streams and numerous springs. Erosion is active these drainages. The flat-lying Dawson arkose is the predominant outcrop on the ' Platte-Arkansas divide between Denver and Colorado Springs and occupies the greater part of the Castle Rock quadrangle. Although it had a wider distribution, this soft formation has been extensively eroded elsewhere. The Castle Rock conglomerate outcrops in areas of the divide between tributaries of the South Platte River from the vicinity of Elbert to Sedalia. A large part of the Castle Rock conglomerate lies in the Castle Rock quadrangle where it caps the upland These two geological .