Richat Structure in Mauritania
Credit: NASA; USGS; Landsat · Download full size image
The so-called Richat Structure is a geological formation in the Maur Adrar Desert in the African country of Mauritania. Although it resembles an impact crater, the Richat Structure formed when a volcanic dome hardened and gradually eroded, exposing the onion-like layers of rock. Landsat ETM image. Posted on: 16 Mar, 2003
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