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  2. Great Sand Dunes National Park and Preserve - Wikipedia

    en.wikipedia.org/wiki/Great_Sand_Dunes_National...

    The park contains the tallest sand dunes in North America, up to 750 feet (230 m) tall. [6] [7] The dunes cover an area of about 30 sq mi (78 km 2) and are estimated to contain over 1.2 cubic miles (5 billion cubic metres) of sand. [8] Sediments from the surrounding mountains filled the valley over geologic time periods.

  3. Oregon Dunes National Recreation Area - Wikipedia

    en.wikipedia.org/wiki/Oregon_Dunes_National...

    The Oregon Dunes are a unique area of windswept sand. They are the largest expanse of coastal sand dunes in North America and one of the largest expanses of temperate coastal sand dunes in the world, [2] with some dunes reaching 500 feet (150 m) above sea level. They are the product of millions of years of erosion by wind and rain on the Oregon ...

  4. Bruneau Dunes State Park - Wikipedia

    en.wikipedia.org/wiki/Bruneau_Dunes_State_Park

    Featuring large sand dunes and small lakes, the state park is the site of North America's tallest single-structured sand dune, which is approximately 470 feet (140 m) in height. [3] [A] The park encompasses 4,800 acres (7.5 sq mi; 19 km 2) and features the Bruneau Dunes Observatory, where visitors can use a telescope for stargazing. [1]

  5. The dunes are just the beginning of what’s so great about ...

    www.aol.com/dunes-just-beginning-great-great...

    Lenticular clouds appear to form mountains in the sky over Great Sand Dunes National Park in Nov. 2022. The dunes are believed to be remnants of a massive lake, Laka Alamosa, that dried up roughly ...

  6. Algodones Dunes - Wikipedia

    en.wikipedia.org/wiki/Algodones_Dunes

    Algodones Dunes. The Algodones Dunes is a large sand dune field, or erg, located in the southeastern portion of the U.S. state of California, near the border with Arizona and the Mexican state of Baja California. The field is approximately 45 miles (72 km) long by 6 miles (9.7 km) wide and extends along a northwest-southeast line that ...

  7. Sleeping Bear Dunes National Lakeshore - Wikipedia

    en.wikipedia.org/wiki/Sleeping_Bear_Dunes...

    The Sleeping Bear Dunes National Lakeshore protects 71,199 acres (111 sq mi; 288 km 2) of the shoreline of Lake Michigan. Much of this area is located on the Leelanau Peninsula, a large peninsula in the northwest of Michigan's Lower Peninsula. The park is located about 20 miles (32 km) west of Traverse City, the largest city in Northern Michigan.