Dune
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A dune is a landform composed of wind- or water-driven sand. It typically takes the form of a mound, ridge, or hill. An area with dunes is called a dune system or a dune complex. A large dune complex
The Maspalomas Dunes of Gran Canaria, Canary Islands, Spain
Isolated barchan dunes on the surface of Mars. Dominant wind direction would be from left to right.
Rub' al Khali (Arabian Empty Quarter) sand dunes imaged by Terra (EOS AM-1). Most of these dunes are seif dunes. Their origin from barchans is suggested by the stubby remnant "hooks" seen on many of the dunes. Wind would be from left to right.
Large linear seif dunes in the Great Sand Sea in southwest Egypt, seen from the International Space Station. The distance between each dune is 1.5–2.5 km (0.93–1.55 mi).
Great Sand Dunes National Park and Preserve is a national park of the United States that conserves an area of large sand dunes on the eastern edge of the San Luis Valley, and an adjacent national pres
Dune
…California. Guadalupe-Nipomo Dunes, on the central coast of California. Cat Dune in the Cronese Mountains is a rare type of dune called a sand ramp. Great Sand Dunes National Park, Colorado. The Great Dune found in Cape Henlopen State Park in Lewes, Delaware…
Hikers traversing a dune at the park
Members of the Jicarilla Apache tribe gather at the Great Sand Dunes to share traditional clothing, crafts, stories, and dances in July of 2019.
John C. Frémont
Medano Creek