Hart Mountain National Antelope Refuge, National wildlife refuge in Lake County, Oregon, US

Hart Mountain National Antelope Refuge covers more than 422 square miles (1,090 km2) of southeastern Oregon, from high desert to shallow playa lakes. The refuge sits at about 1,886 metres (6,188 ft) on Hart Mountain, and Warner Peak rises to 2,442 metres (8,012 ft) about 11.7 km to the east. Sagebrush uplands, spring-fed meadows and rocky cliffs on the west side hold pronghorn, bighorn sheep and mule deer.

The refuge was established in 1936 to protect pronghorn antelope populations that had declined sharply in this region. Its creation was part of efforts to save threatened wildlife species in the American wilderness.

The refuge serves as a place where visitors observe and learn about high desert wildlife in its natural state. People come here to watch pronghorn antelope and other animals thrive in this dry, open landscape shaped by seasons and weather.

The terrain requires sturdy, high-clearance vehicles since most roads are unpaved and rough. The nearest fuel and supplies are located roughly 25 miles (40 kilometers) west in Plush, so plan accordingly before entering.

Warner Peak, the refuge's highest point at 8,017 feet (2,442 m), lies about 11.7 km east of the refuge's central area. Cattle grazing was banned inside the refuge in 1994, and a 2015 study documented the return of aspens, rushes and willows along restored streams. A PBS documentary, "Rewilding a Mountain", was made about that recovery.