Great Sand Dunes National Park and Preserve
Natural area, south-central Colorado, U.S. It lies at the eastern edge of the San Luis Valley along the western base of the Sangre de Cristo Mountains. Established in 1932 as a national monument, the 150,000-acre (60,700-hectare) region contains some of the highest inland sand dunes in the U.S., with changing crests that rise to 700 ft (215 m). In 2000 the Great Sand Dunes National Preserve was created, and after much land acquisition the monument officially became a national park in 2004.
This entry comes from Encyclopædia Britannica Concise.
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