In the Sahara is the "eye" Bashny.Net

In this eye focused kosmonavty



A unique geological formation known as the structure Richat or "Eye of the Sahara" is a part of the desert in Mauritania near Ouadane settlement.

When viewed from a bird's eye structure is a slightly elongated ellipse of various shades of blue, its diameter is 50 km, so the "eye" in the midst of the sands of the Sahara is perfectly visible from space, one of the Soviet cosmonauts, crew member station "Salyut-7" Valentin Lebedev like -That I compared him to a children's pyramid of colored rings.





Guell-Riyadh Richat structurally resembles tree rings, so experts suggest that the structure originated from the erosion of sediment on raising the earth's crust. Most likely, the "Eye of the Sahara" was formed between the late Proterozoic eon (geological epoch) and Ordovician (the second period of the Paleozoic era) - the age of the ancient ring has about 500-600 million years.

Previously, scientists believed that the "Eye" was the result of a meteorite or volcanic activity, but a thorough examination of structures Richat found no trace of a celestial body or a dome of lava that formed during a volcanic eruption, so now in the scientific community of adherents of these versions virtually none.

via factroom.ru