WORLDSAT INTERNATIONAL / SCIENCE PHOTO LIBRARY WORLDSAT INTERNATIONAL / SCIENCE PHOTO LIBRARY
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Eroded dome mountain. Satellite image of an eroded dome mountain, in the deserts of Mauritania, known as the Richat Structure. The erosion of this dome mountain, to a height of 485 metres, has revealed the rock layers (strata) that were uplifted in the upheaval that formed the mountain. The symmetrical dome structure has left concentric rings of these strata. It is nearly 50 kilometres across. Ripples (sand dunes) run over the desert sands (light brown), showing the prevailing wind direction.
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