Welcome to the relaxing surroundings of Bighorn Canyon National Recreation Area, bursting with forests, mountains, upland prairie, deep canyons, broad valleys, high desert, lake and wetlands. The Canyon was established by an act of Congress on October 15, 1966, following the construction of the Yellowtail Dam by the Bureau of Reclamation. Since its establishment, people have been able to find tranquil settings to better explore recreation, nature, wildlife and history.