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Great Sand Dunes National Park and PreserveGreat Sand Dunes and Medano Creek
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Great Sand Dunes National Park and Preserve
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Surge flow, Medano Creek  

Did You Know?
Medano Creek, flowing at the base of Great Sand Dunes, is one of the few and best places in the world to experience "surge flow", where creek water comes in rhythmic waves.
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Last Updated: July 27, 2006 at 16:15 EST