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Mauritania - MERIS, 21 June 2003
- Title Mauritania - MERIS, 21 June 2003
- Released 11/11/2004 1:53 pm
- Copyright ESA
This image of the Richat structure in Mauritania was acquired on 21 June 2003 by Envisat's Medium Resolution Imaging Spectrometer (MERIS) in full resolution mode, meaning a spatial resolution of 300 metres.
The 50-km-diameter circular Richat structure is one of those geological features that are more clearly observed from space than from down on the ground, with this 'eye of Africa' a familiar landmark to astronauts since the earliest manned missions.
Once thought to be the result of a meteor impact, today researchers believe the Richat structure was caused by process of geological uplift followed by erosion from wind and water.