No. 9 Here, the landscape shifts with the wind.
Turns out, the largest gypsum dune field in the world is no match for a little gust of wind. White Sands National Monument pays homage to this mysterious work of Mother Nature – 275 square miles of white sand dunes that wax and wane at the whim of a passing breeze. The pure gypsum that forms these unusual dunes originates in the western portion of the monument from an ephemeral lake or playa with a very high mineral content. As the water evaporates (theoretically as much as 80″ per year!), the minerals are left behind to form gypsum deposits that eventually are wind-transported to form the dunes. Insider tip: bring a sled. You’ll thank us later.