The Richat Structure, additionally called " Guelb er Richât", the "Eye of the Sahara or the Eye of Africa" is a noticeable round element in the Sahara's Adrar Plateau, close Ouadane, west– focal Mauritania.
The Richat Structure is a profoundly dissolved, marginally circular arch with a distance across of 40 kilometers (25 mi). The sedimentary shake uncovered in this vault goes in age from Late Proterozoic inside the focal point of the arch to Ordovician sandstone around its edges. The sedimentary rocks forming this structure plunge outward at 10– 20°. Differential disintegration of safe layers of quartzite has made high-help roundabout cuestas. Its middle comprises of a siliceous breccia covering a region that is somewhere around 30 kilometers (19 mi) in distance across.
The wide dissemination of images and explanations relating to this unusual phenomenon has encouraged visitors, tourists or scientists, to this remote place of the planet.