Radar images of the Aorounga structure taken from space in the late 1990s ... This striking astronaut photo shows off an "eye-catching" impact crater in the Sahara Desert. The oculus-like ...
Spanning 25 miles, it is so large that it can be seen from space. It is known as the Richat Structure, or the Eye of the Sahara, and is one of Africa’s most unusual natural formations.