sand dune: Quick Facts

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sand dunes of the Sahara

Abu Dhabi: desert

Sand dunes with sparse grass stretch across a flat landscape under a blue sky with scattered clouds on the island of Fano, Denmark.

sand dunes on Mars

How do dunes form and change over time?

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Topics

slip face coastal dune ʿalâb dead zone pyramidal dune compound dune coppice dune echo dune barchan seif playa alluvial fan badland pediment desert pavement arroyo inselberg oasis bajada erg

Mt. Elbrusvolcano, Western Caucasus mountain range, Russia. (dormant Russia)

Natural Wonders