The insane 25-mile structure in Africa that can be seen from space
Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...
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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 ... obscure parts of the structure in photographs, according to ESA. Related: Mystery of enormous Saharan ...