This is a magical place comprised of waves upon waves of glistening, white sand.  Great dunes of gypsum crystal have engulfed 275 square miles of desert just southwest of Alamogordo, New Mexico, creating the world's largest gypsum dune field. 

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At dawn and dusk, with the sun low on the horizon, the interplay of highlight and shadow creates brilliant, shifting patterns and  that will never exist again.