The Cloud Peak Wilderness is located in north central Wyoming in the United States. Entirely within Bighorn National Forest, the wilderness was established in 1984 in an effort to preserve the wildest section of the Bighorn Mountains. The wilderness has the highest peaks in the Bighorn Mountains including Cloud Peak and Black Tooth Mountain, as well as Cloud Peak Glacier, the only remaining active glacier in the Bighorn Mountains. The Cloud Peak Wilderness is 189,039 acres (765.01 km2).U.S.