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Great Sand Dunes National Park and Preserve

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. Originally created as Great Sand Dunes National Monument on March 17, 1932, Great Sand Dunes National Park and Preserve was established by an act of the United States Congress on September 13, 2004. The park includes 44,246 acres (17,906 ha) and the preserve protects an additional 41,686 acres (16,870 ha).

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