The Sierra Ancha Wilderness is a 20,850 acres (8,440 ha) U.S. wilderness area on the Tonto National Forest in the state of Arizona. The terrain varies from box canyons to high cliffs and pine-covered mountains. Elevations range from lows of about 4,000 feet (1,200 m) to a high of 7,733 feet (2,357 m) at Aztec Peak.