Sign at Great Sand Dunes National Park in Colorado. These are the tallest sand dunes in North America, spread over 30 square miles.

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Sign at Great Sand Dunes National Park in Colorado. These are the tallest sand dunes in North America, spread over 30 square miles at altitudes above 8200 feet.

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Size: 4752px × 2370px
Location: Great Sand Dunes National Park, Colorado, USA
Photo credit: © Janice and Nolan Braud / Alamy / Afripics
License: Licensed
Model Released: No

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