The next time you're flying over Mauritania — or passing above Africa aboard the International Space Station — have a glance out the window and see if you can spot the Richat Structure.

Astronauts aboard the International Space Station captured this image of a huge crater in Africa on Nov. 22, 2014. This is the Richat Structure in northwestern Mauritania, otherwise known as the ...

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 ...

It is known as the Richat Structure, or the Eye of the Sahara, and is one of Africa’s most unusual natural formations. The structure is located in Mauritania’s Adrar Plateau and consists of a ...

The 'Eye of Africa', a geological phenomenon in the Sahara Desert of Mauritania, a country in northern Africa, peers up in this satellite image. The Richat structure, as it is also known ...

Dutch astronaut Andre Kuipers snapped this hypnotic image of the so-called Richat structure in Mauritania, as the space station flew over the Sahara Desert on the Atlantic Coast of West Africa.

Known as the Richat Structure, the formation is a series of ... data reporting those perfect looking circles in northwest Africa are “due to various rock types eroding at different rates.” ...