This final report documents the results of archeological inventory, excavation, and analysis of prehistoric cultural resources within a 45-kilometer (28-mile) long corridor in the Island-in-the-Sky district of Canyonlands National Park, Utah. During three field seasons of survey, mapping, and excavation in 1983-1985, the research team recorded 322 artifact scatters, plotted 90,000 prehistoric artifacts and 250 historic items, completed 600 one-square-meter test pits, and conducted 10 block excavations. Block excavations at two locations in Gray's Pasture revealed a plant processing/hunting field camp (42SA16858) and a disturbed pithouse (42SA8506). Associated features and materials included a puddled clay-lined hearth, a slab-lined [...]