The Richat Structure, called "Eye of the Sahara", is an eroded geological dome in the nation of Mauritania. Here pictured from the International Space Station as it orbited 256 miles above Africa. (Aug. 21, 2022)
Video of people visiting the structure, which has a diameter of 45 km and is only recognizable as round shape from space. Some speculate it is the site of The Lost Ancient City of Atlantis.
