Castle Peak, the namesake of the WSA, is a prominent, basalt formation with steep, rugged slopes. Four outstanding geologic formations of sedimentary and volcanic origins from Cretaceous to Pleistocene time are exposed in the area. The WSA contains several peaks that stand around 10,000 feet in elevation. From the main peak, topography varies from gently rolling hills to basins and meadows. With many springs, small lakes, and the headwaters of Milk Creek, Alkali Creek, Big Alkali Creek, Catamount Creek, Norman Creek and Castle Creek, the WSA provide abundant wetlands and aquatic habitat and in some waters, support trout. The main vegetation types include sagebrush/mesic mountain shrub, aspen, spruce-fir, and a number of grassy meadows replete with wildflowers. Fauna includes Rocky Mountain elk, mule deer, black bear, bobcat, mountain lion, coyote, beaver, raptors, and waterfowl. Opportunities for hiking, backpacking, camping, snowshoeing, fishing, hunting and photography abound.

Visitation Information

The WSA is located in Eagle County. From Wolcott, CO, go north on Colorado 131 about 3 miles and turn left (west) on Milk Creek Road. Proceed about 2 miles to the trailhead, on the right by the power line. The trail follows an old jeep trail running northwest. The trail is easy to moderately difficult, with a few steep stretches.

Visitor Advisory

Total Area: 12,095 acres

Elevation Range: ~8,000 to ~11,275 feet

BLM Field Office: Colorado River Valley

Designated: 1980 (Wilderness Study Area)