For millennia, the Eye of the Sahara was hiding in plain sight. That's because this huge and mysterious geologic formation is hard to spot from ground level, walking around on Earth. It turns out ...

From an altitude of 255 miles, an Expedition 59 crewmember photographed the Richat Structure, or the “Eye of the Sahara,” in northwestern Mauritania. The circular geologic feature is thought ...

GOOGLE MAPS reveals the Richat Structure - also known as the Eye of the Sahara - but its origin remains a mystery even today. By Kara Godfrey 09:24, Tue, Feb 27, 2018 | UPDATED: 09:34, Tue, Feb 27 ...

Estimates of the Eye of the Sahara's dimensions range from 25 to 31 miles (40 to 50 kilometers) in diameter. The eye forms a near-perfect circle in the desert of Mauritania, which initially led ...

The circular formation in this photo is the Richat Structure of Mauritania, which “has captured the attention of astronauts for about as long as NASA has sent humans into orbit around Earth ...

A massive circular rock formation marks the desert in Mauritania like a target—it’s the “Eye of the Sahara.” Easier seen from above than from the ground, the Richat Structure (or Guelb er Richat), as ...

The circular formation in this photo is the Richat Structure of Mauritania, which “has captured the attention of astronauts for about as long as NASA has sent humans into orbit around Earth ...

In the western Sahara Desert lies a natural wonder that has intrigued scientists and adventurers for centuries. Known as the Richat Structure — or, more commonly, the Eye of the Sahara — this massive ...

IF YOU ever find yourself in orbit, you may notice a giant eye staring back at you from Earth: the Eye of the Sahara. Located near Ouadane in Mauritania and also called the Richat structure, it ...

NASA’s Goddard Space Flight Center decided to kick a hornet’s nest July 16 when it shared an image of one of Earth’s most debated oddities. Known as the Richat Structure, the formation is a ...