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CHAD Tibesti Range -- 11 Jan 2011 -- The broad Emi Koussi volcano is a shield volcano located in northern Chad, at the southeastern end of the Tibesti Range. The dark volcanic rocks of the volcano provide a sharp contrast to the underlying tan and light brown sandstone exposed to the west, south, and east (image lower left, lower right, and upper right). This astronaut photograph highlights the entire volcanic structure. At 3415 meters above sea level, Emi Koussi is the highest summit of Africa?s Sahara region. The summit includes three calderas formed by powerful eruptions. Two older and overlapping calderas form a depression approximately 12 kilometers by 15 kilometers in area bounded by a distinct rim (image center). The youngest and smallest caldera, Era Kohor, formed as a result of various eruptions around 2 million years ago -- Picture by Lightroom Photos | NASA
A Tuareg in traditional costume with his camel in one of the hard flat areas of the Sahara Desert. The feint tyre tracks are the only route or piste indication without markers.
