US Department of the Interior @Interior
White Sands National Park—a place like no other on earth—is a marvel to study, experience and explore. Great wave-like dunes of shimmering gypsum sand have engulfed 275 square miles of desert, creating the world's largest gypsum dune field. Photo courtesy of NPS https://t.co/iXElJWaDP1 — PolitiTweet.org