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ISS023-E-35670
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Spacecraft nadir point: 41.9° N, 50.2° E

Photo center point: 40.8° N, 47.1° E

Nadir to Photo Center: West

Spacecraft Altitude: 187 nautical miles (346km)
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Image Caption: Mingachevir Reservoir, Azerbaijan

This detailed astronaut photograph highlights the southern Mingachevir Reservoir in north-central Azerbaijan. The Mingachevir Reservoir occupies part of the Kura Basin, a topographic depression located between the Greater Caucasus Mountains to the northeast and the Lesser Caucasus Mountains to the southwest. Folded layers of relatively young (less than 5. 3 million years old) sedimentary rock, explosive volcanic products (ash and tuff), and unconsolidated sediments form the gray hills along the northern and southern shorelines of the reservoir (image center and right). Afternoon sun highlights distinctive parallel patterns in the hills that are the result of water and wind erosion of different rock layers exposed at the surface.

The nearby city of Mingachevir (left) is split by the Kur River after it passes through the dam and hydroelectric power station complex at image top center. The current city was built in support of the hydroelectric power station constructed as part of the then-Soviet Union's energy infrastructure for the region. Today, Mingachevir is the fourth-largest city in Azerbaijan (by population), and it has become a cultural and economic center of the country. The reservoir held approximately 15 billion cubic meters of water at the time this image was taken, with a total engineered capacity of 16 billion cubic meters. The width of the reservoir illustrated here is approximately 8 kilometers (5 miles); a jet flying over the reservoir left a contrail midway between the shorelines.