In a remote section of the Sahara Desert, Mauritania specifically, there lies this most mysterious formation, the ‘Eye of the Sahara,’ also known as the Richat Structure. Those passing over the large flat dome on the ground do not notice anything particularly out of the ordinary, but when viewed from space it stands out.
The eye of the Sahara is 50km in diameter and when viewed from above it does bear a resemblance to the human eye. Especially when one considers that it is actually a low dome, like a large eyeball peering out of the desert and gazing up into the sky. Its bizarre appearance and considerable size have led to great speculation as to how it ever came to exist. It used to be that no-one understood its formation and even now it has been extensively studied few believe that we are in possession of the truth yet. I suppose we shall have to wait, and see.