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Sand Structures

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Ewald Mörsen

Premium (Complete), Kalkar

Sand Structures

found in the great wave-like dunes of gypsum sand, which create the world's largest gypsum dunefield (275 square miles of desert),
the White Sands NM, New Mexico, USA

http://www.nps.gov/whsa/index.htm

The picture has not been converted to black & white!