Rising from the heart of the Tularosa Basin is one of the world's great natural wonders - the glistening white sands of New Mexico. Great wave-like dunes of gypsum sand have engulfed 275 square miles of desert, creating the world's largest gypsum dunefield. White Sands National Monument preserves a major portion of this unique dunefield, along with the plants and animals that live here.
For more information about visiting White Sands, follow this link-
http://www.nps.gov/whsa/index.htm
The White Sands National Monument is a U.S. National Monument located about 16 miles (26 km) southwest of Alamogordo in western Otero County and northeastern Doña Ana County in the state of New Mexico, at an elevation of 4,235 feet (1,291 m). The area is in the mountain-ringed Tularosa Basin and comprises the southern part of a 275 square miles (710 km2) field of white sand dunes composed of gypsum crystals. It is the largest gypsum dune field in the world.