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I saw this landform on Google Earth on the border of Algeria/Tunisia/Libya and wondered what it is called (so that I can read up on it and find out how it forms - I am not a geologist):

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Here is a 3D view: (Press Ctrl + drag left mouse button to rotate)

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Does anyone know what kind of landform this is?

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Star dunes, caused by the prevailing winds coming from multiple directions.

Take a look at these different dune types.

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