The Richat Structure, also known as the Eye of the Sahara or blue eye
of Africa, is a prominent geological circular feature in the Sahara desert in
Mauritania near Ouadane. It is nearly 50 kilometers across and very visible
from space. Initially interpreted as an asteroid impact structure because of
its high degree of circularity, and then as a structure formed by a volcanic
eruption that also seems improbable because of the lack of a dome of igneous or
volcanic rock, it is now argued to be a highly symmetrical and deeply eroded
geologic dome that collapsed. So it is now thought by many to have been caused
by uplifted rock sculpted by erosion. But the fact that the "rings",
are equidistant to the centre and that the Richat Structure is nearly circular
remains a mystery.
Some people
are amazed by the resemblance of this structure with the representation we have
of Atlantis by Plato. According to Plato, the island was circular, divided into
concentric circles of land and water: "There were 2 of land and 3 of
water... Atlantis when sunk by the earthquake became an impossible barrier of
mud to voyagers sailing from hence to any part of the ocean..." And he
spoke about a mount sheltering the city by North and "and encompassing a great
plain of an oblong shape in the south "...etc... Atlantis in Greek means
Atlantis, nesos : the island of Atlas. And we get near the geologic eye at the
North the Mount Atlas. According to Plato, Atlantis was lying "in front of
the Pillars of Hercule", and we are there just in front from South and not
beside from East or West as many authors are searching...
Northwest of
the eye is with Kediet ej Jill Mountain, Mauritania's highest peak (nearly 1000
meters). The mountain has a large concentration of magnetite, giving it a
blueish tinge and totally messing up magnetic surveys and navigation nearby.
The western Sahara fills the north.
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