GeoEye 2011 Calendar Images - Some of the most unusual wildlife and nature reserves in the world can be found in the heart of the 'dune sea' of the Namib Desert in Namibia, southwest of Angola. Here, the world's tallest sand dunes rise over 300 meters (984 ft) high. The interaction between wind and sand over 55 million years formed this amazing and vast desert's complex patterns. GeoEye-1 .50-meter resolution.
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