Dugway Proving Ground (DPG) is a US Army facility located approximately 85 miles (140 km) southwest of Salt Lake City, Utah in southern Tooele County and just north of Juab County. It encompasses 801,505 acres (3,243 km², or 1,252 sq mi) of the Great Salt Lake Desert, an area the size of the state of Rhode Island, and is surrounded on three sides by mountain ranges.