The Richat Structure, widely known as the “Eye of the Sahara,” is a striking geological formation in Mauritania’s section of the Sahara Desert that is recognizable from space due to its concentric ring pattern. Once believed to be the crater of a massive meteorite impact, scientists now understand it as a natural geological dome formed by gradual uplift, the exposure of layered rock, and millions of years of erosion. Because the rocks have varying resistance to erosion, they weathered at different rates, producing the distinctive circular pattern seen today. Its unusual circular form has fueled speculation linking it to Plato’s legendary lost city of Atlantis, though geologists say there is no scientific evidence to support that theory. Located in Mauritania’s Adrar region, the formation remains a striking example of the natural forces that have shaped the planet’s surface over vast stretches of geological time.