Desolation Canyon, Jack Canyon, Turtle Canyon, Floy Canyon, Coal Canyon, Spruce Canyon, Flume Canyon, and Winter Ridge WSAs Trails Professional Review and Guide
"The wilderness study areas in this chapter are all located along or near the Green River, with the exception of Winter Ridge WSA. The Uintah and Ouray Indian Reservation separates Winter Ridge WSA from the Green River corridor. If you look at a Utah highway map, you’ll notice that this entire area appears roadless. I-70 runs along the southern edge, with US 191 to the west and north. In places, Desolation Canyon (cut by the Green River) is 3,000 to 5,000 feet deep.
This rugged canyon and its tributaries are not the only extreme terrain that limit access via paved highways. The 250-mile-long Book Cliffs divide the civilized world from this expanse of wilderness study areas. Frequently, boundary lines between wilderness study areas are rough dirt roads suitable for jeeps and other 4WD vehicles with high clearance. This trail guide includes descriptions of Rtrail Canyon to Joe Springs."