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It is 322 miles according to Google Maps.
the ground
Great Sand Dunes National Monument was created in 1932.
Great Sand Dunes National Park and Preserve is a United States National Park located in the San Luis Valley, in the easternmost parts of Alamosa County and Saguache County, Colorado, United States. It is not far from the town of Alamosa, Colorado.
Huge piles of sand are called sand dunes. Sand dunes typically form in deserts or coastal areas where there are strong winds that shape and move the sand into these large structures.
There are only two sand dunes in Michigan. The two sand dunes are Sleeping Bear Dunes and Sliver lake sand dunes.
sept 13 2004
Colorado.
no.....
350 miles
the largest sand dunes
sand dunes change