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9th Annual Smithsonian Magazine Photo Contest Altered Images
A view of the Great Sand Dunes, the tallest dunes in North America against the Sangre de Cristo Mountains in the San Luis Valley of Colorado. The story of the sand dune's formation is still being disc

A view of the Great Sand Dunes, the tallest dunes in North America against the Sangre de Cristo Mountains in the San Luis Valley of Colorado. The story of the sand dune's formation is still being discovered.

Photo Detail
Date Taken: 08.2009
Date Uploaded: 07.2011
Photo Location: Mosca, Colorado, United States of America
Camera: Canon EOS 40D
Copyright: © Mallory Olenius