The bull's-eye of the Richat Structure - the barren Gres de Chinguetti Plateau, Mauritania. It represents domally uplifted, layered (sedimentary) rocks that have been eroded by water and wind into the present shape (NASA).
The bull's-eye of the Richat Structure - the barren Gres de Chinguetti Plateau, Mauritania. It represents domally uplifted, layered (sedimentary) rocks that have been eroded by water and wind into the present shape (NASA).
The western end of the great Sahara Desert. This true-color image were captured by the Terra and Aqua satellites from November 2002 to April 2003 (NASA). More Images of Africa►
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