White Sands, the world’s largest gypsum dune field, is in New Mexico. Did you know that sand dunes can move up to 25 feet a year? The sand dune does that by having more and more sand blow over the top of a dune.
When we visited White Sands we rented a sled and slid down the steep part of the dunes. It was very hard to climb to the top of the dune because it was so steep. I collapsed nearly every time into the sand dune as I climbed up to the top.
We went to the place where a lake would be during the rainy months. When the lake dries up during the nonrainy season the gypsum is then selenite, which breaks down from the wind and gets smaller and smaller until it is sand. The water from the mountains around White Sands is gypsum rich because there is gypsum in the mountains.
Walking on the dry bottom of the lake reminded me of walking on Oreo cookies. When you walked on it, it was the sound of crushing Oreo cookies. The white of the selenite was very white.
We had a great time at White Sands National Monument. If you go, I recommend renting the ten dollar sleds. Check the weather because it was cold the day we went, but it gets really hot there. It’s in a desert you know!