Great Sand Dunes National Park, Colorado, United States

Great Sand Dunes National Park and Preserve is an United States National Park found in the San Luis Valley, in the easternmost parts of Alamosa County and Saguache County, Colorado, United States. Basically made as Great Sand Dunes National Monument on March 17, 1932, Great Sand Dunes National Park and Preserve was built by a demonstration of the United States Congress on September 13, 2004. The park incorporates 44,246 sections of land (17,906 ha) and the preserve ensures an extra 41,686 sections of land (16,870 ha)

The park holds the tallest sand dunes in North America, climbing around the range of 750 feet (230 m) from the floor of the San Luis Valley on the western base of the Sangre de Cristo Range, blanket something like 19,000 sections of land (77 sq.km). Scientists say that the dunes began framing less than 440,000 years back.
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