Mauritanië

In Mauritania lies the 'Eye of Sahara': The Richat Structure. It is a mysterious natural phenomenon for which no explanation has yet been found. The landscape consists of rings of different rock types, which resemble an eye from the air. Nowhere on earth does a comparable landscape structure occur. In the beginning, the Eye was believed to be the result of a meteorite impact or a volcanic crater. There is no geological evidence for either.