Guelb er Richat, Mauritania
Radar imagery from the TanDEM-X mission was used to produce this view of the Richat Structure, also known as the Eye of Africa and Guelb er Richat.
It was once believed to be an impact crater from an asteroid but studies of the site have not revealed sufficient evidence to corroborate this theory. Today, scientists believe the Eye was once a dome formed by ground movements that later collapsed. But the true origins of this distinctive landmark remain unknown.
The Richat structure is a prominent geological circular feature in the Sahara desert near Ouadane, west–central Mauritania. The structure has a diameter of almost 30 miles.
This image is an example of a WorldDEM product; a Digital Elevation Model customised to highlight the terrain of a location. It is used to good effect in this image, clearly demonstrating the structure of the Eye.
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