The Dixie National Forest, with headquarters in Cedar City, Utah occupies two million acres and stretches for about 170 miles across southern Utah. The largest National Forest in Utah, it straddles the divide between the Great Basin and the Colorado River. Elevations vary from 2,800 feet near St. George, Utah to 11,322 feet at Blue Bell Knoll on Boulder Mountain. The southern rim of the Great Basin, near the Colorado River, provides spectacular scenery. Colorado River canyons are made up of many-colored cliffs and steep-walled gorges.