Hells Canyon Wilderness Area (9,951 acre) is a portion of the Hieroglyphic Mountains. The most prominent peaks are Garfias Mountain at 3,381 feet (1,030.5 m) and Hellgate Mountain at 3,339 feet (1,017.7 m). Other peaks, most over 3,000 feet (910 m) in elevation, encircle Burro Flats, effectively isolating the flats from the surrounding countryside. Popular recreational activities in Hells Canyon Wilderness include rock climbing, hiking, wildlife watching, and camping.