Above: White Sands National Monument near Alamogordo, NM. The dunes are white because they are made up almost entirely of the mineral gypsum. Photo credit, David Moss.
Have a question? Contact me using the info or form below. David K. Moss Assistant Professor Sam Houston State University Department of Geography and Geology Huntsville, TX 77341 P.O. Box 2148 email: email@example.com