Camp Hart Mountain was constructed by the Civilian Conservation Corps (CCC) and operated from 1937 to 1941. Hart Mountain National Antelope Refuge , established in December of 1936 by President Franklin D. Roosevelt, helped protect pronghorn antelope.
The CCC crew stationed at Camp Hart Mountain helped with many projects such as building roads, stringing telephone lines, and building new structures. After their work was completed, most of the buildings at the camp were taken down. The building in the distance was the infirmary and it’s the only historical building remaining at this site. There is currently an RV campground located here.
By the way, I worked at Hart Mountain years ago and saw pronghorn regularly. Here’s a story of one such encounter.