The insane 25-mile structure in Africa that can be seen from space
A massive circular structure in the Sahara Desert has puzzled scientists for decades. Spanning 25 miles, it is so large that ...
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Eye of the Sahara: Mauritania's giant rock dome that towers over the desert
The "Eye of the Sahara" — also known as the "Eye of Africa" or the Richat structure ... the desert of Mauritania, which initially led scientists to think it was an impact structure from ...