Eye of the Sahara
Posted by Razorback from butdoesitfloat.com
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The Richat Structure or Eye of the Sahara: "Initially interpreted as an asteroid impact structure because of its high degree of circularity, it is now argued to be a highly symmetrical and deeply eroded geologic dome. Despite extensive field and laboratory studies, geologists have found a lack of any credible evidence for shock metamorphism or any type of deformation indicative of a hypervelocity extraterrestrial impact."
Added in Blinded Me With Science
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