Sheep Mountain Wilderness
IUCN category Ib (wilderness area)
Map of the United States
Location	Los Angeles and San Bernardino counties, California, United States
Nearest city	Glendora, California
Coordinates	34°13′48″N 117°38′10″W / 34.23000°N 117.63611°W / 34.23000; -117.63611
Area	41,883 acres (169 km2)
Established	1984 (1984)
Governing body	United States Forest Service

Sheep Mountain Wilderness is a wilderness area of 41,883 acres (169 km²)^[1] within the San Gabriel Mountains National Monument and managed by the Angeles National Forest. It is within Los Angeles County and San Bernardino County, southern California.

The U.S. Congress passed the California Wilderness Act of 1984, which created this wilderness area and added it to the National Wilderness Preservation System.

The wilderness includes Iron Mountain, an 8,007 ft (2,441 m) peak.

Recreation

Notable hiking in the area includes Heaton Flat along the East Fork of the San Gabriel River to Bridge to Nowhere. Also popular for hikes is the trail to the 277-acre (1.12 km²) Big Horn Mine, which was purchased from the owner in 2006 by the Wilderness Land Trust, and incorporated into the wilderness after being transferred to the US Forest Service.^[2]