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.
New Mexico is a state located in the southwestern region of the United States. Inhabited by Native American populations for many centuries, it has also been part of the Imperial Spanish viceroyalty of New Spain, part of Mexico, and a U.S. territory. Among U.S. states, New Mexico has the highest percentage of Hispanics at 45% (2008 estimate), being descendants of Spanish colonists and recent immigrants from Latin America. It also has the third-highest percentage of Native Americans after Alaska and Oklahoma, and the fifth-highest total number of Native Americans after California, Oklahoma, Arizona, and Texas. The tribes represented in the state consist of mostly Navajo and Pueblo peoples. As a result, the demographics and culture of the state are unique for their strong Spanish, Mexican, and Native American cultural influences. At a population density of 16 per square mile, New Mexico is the sixth most sparsely inhabited U.S. state.[http://en.wikipedia.org/wiki/New_mexico]