White Sands National Park, New Mexico, United States (© Francesco Carucci/Getty Images)

If 'Frozen' traded ice for sand, the result would look a lot like White Sands National Park in New Mexico, United States—cool, white dunes that deceive the eye at first glance. It was established to protect a rare geological phenomenon: the world's largest gypsum dunefield. These dunes were formed from gypsum crystals that broke down over thousands of years, creating bright waves that stay cool even in summer.