White Sands Missile Range (WSMR) is a United States Army rocket range of almost 3,200 sq mi (8,300 km2) in parts of five counties in southern New Mexico. The largest military [not in citation given] installation in the United States, WSMR and the 600,000-acre (2,400 km2) McGregor Range Complex at Fort Bliss to the south (southeast Tularosa Basin and on Otero Mesa are contiguous areas for military testing.
White Sands Proving Grounds was established in July 1945. It combined the existing ORDCIT Firing Ranges, the Alamogordo Bombing Range, and large tracts of both private and public lands. Even today, the range is speckled with the abandoned ranch houses and windmills of a bygone era. There are also several old abandoned silver and gold mines near the Gap Site of the Sierra Oscura.