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Photo center point: 30.0° N, 5.0° E

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Image Caption: A north-looking oblique view of chains of star sand dunes in eastern Algeria (30.0N, 5.0E) as seen from the Skylab space station in Earth orbit. The low sun angle of about 25 degrees above horizontal enhances the detail in this picture. The field of view at the base of the photograph is approximately 200 kilometers (125 miles). The individual dunes are roughly star-shaped rather than simple crescents which are common in dune fields. In this region the stars are aligned along ridges.