High Quality Content by WIKIPEDIA articles! The Ashdown Gorge Wilderness is located in southwestern Utah, USA, within the arid Colorado Plateau region. The wilderness is within the Dixie National Forest adjacent to Cedar Breaks National Monument and characterized by extremely steep-walled canyons cut through the west rim of the Markagunt Plateau. Elevations in the wilderness range from 10,500 feet (3,200 m) to 7,500 feet (2,300 m). Rattlesnake Creek and Ashdown Creek flow through the wilderness. The 7,043 acres (28.5 km2) wilderness area was designated by the U.S. Congress in 1984 and is administered is by the United States Forest Service.