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Where do sand dunes originate? Why do they develop such massive shapes in the desert? In this 2-minute video, we explain the science behind desert sand dunes—how they form, where the sand comes from, and how wind shapes these natural features into towering ridges and curves. From the Mojave Desert to Death Valley and the vast Algodones Dunes, sand dunes are not just piles of sand—they are living landscapes, constantly changing with every gust of wind.

In this short explanation, you’ll learn about erosion, saltation (the wind-driven hopping of sand grains), and the role of ancient lakebeds in dune formation. Discover more about desert geology, desert survival, and the natural forces shaping the Southwest at DesertUSA.com.
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