The Prior Flat Campground has 15 campsites and a vault toilet on about 9 acres. It has one pull-through, picnic tables, fire rings/grills and parking spurs. Typical use season is from June 1st through November 15th because the roads become impassable after heavy rain and snow melt. No horses allowed in campground. The campground is located at the foot of the Shirley Mountains, a remote range in a large basin between the Medicine Bow and the Ferris Mountains. Visitors will enjoy the aspen, limber pine, lodgepole pine, big sagebrush and can view pronghorn, mule deer, elk, coyotes, grouse and golden eagles.
Source: rec_gov · last verified 2026-05-14