Discover the Eye of the Sahara in Mauritania, a vast circular geological formation shaped by ancient magma, uplift and ...

One of the strangest landmarks on Earth hides in the remote Adrar Plateau of Mauritania, part of the vast Sahara Desert. The Richat Structure – also called the “Eye of the Sahara” – is 40 to 50 ...

A giant, geological wonder in the Sahara Desert of Mauritania is pictured in this satellite image. The 40 km-diameter circular Richat structure is one of the geological features that is easier to ...

Atlas Obscura on Slate is a blog about the world's hidden wonders. Like us on Facebook, Tumblr, or follow us on Twitter @atlasobscura. The next time you're flying over Mauritania — or passing above ...

The circular geologic feature is thought to be caused by an uplifted dome that has been eroded to expose the originally flat rock layers. (Image: instagram/@iss) The Richat Structure, also known as ...

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 “Eye ...

A satellite image of the Richat Structure in Mauritania, acquired on November 23, 2010, by the Advanced Visible and Near Infrared Radiometer on Japan’s ALOS satellite. Photo courtesy of JAXA/ESA A ...