Igneous & Impact Craters -- Earth

Volcanoes of the Tibesti Massif (left) in Chad, the highest point in the Sahara, are believed to arise from a hot spot under the African continent. Emi Koussi is the southernmost volcano in this SW-looking view. While most circular features in Tibesti are volcanoes, there is one exception, the Aorounga impact crater in the windstreaks southeast of Emi Koussi volcano.

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