Whites Sands National Park in New Mexico.
Rising from the heart of the Tularosa Basin is one of the world's great natural wonders - the glistening white sands of New Mexico. Here, dunes have engulfed 275 square miles of desert creating the world's largest gypsum dunefield.
White Sands National Monument preserves this dunefield, the plants and animals that have successfully adapted to this constantly changing environment.
Elevation: 4,235 ft.