Hart Mountain National Antelope Refuge is 25 mi. n. off SR 140 at 38782 Hart Mountain Rd. The 275,000-acre refuge protects bighorn sheep, bobcats, golden eagles, mule deer, pronghorn antelopes, sage grouse, pygmy rabbits and other native wildlife. The natural focus of the refuge is Hart Mountain, a volcanic ridge that offers a range of habitats.
Canyons shelter natural and hot springs. Roads, often impassable November through April, are graded and minimally maintained throughout the tourist season.
Primitive camping is available. Visitors may participate in volunteer projects.