Wetlands and Tengiz Oil Field on Northeastern Shores of Caspian Sea46.2N 52.2E
This wide-swath ASAR image shows the northern part of the Caspian Sea, in Kazakhstan. While the sea apears dark grey, the land actually extends out further into the dark grey area than the edge of the light grey area suggests. The medium grey zone between there and the shores of the sea is an area of low-lying wetlands. Located beneath these wetlands is the Tengiz field, an oil and gas field that covers a 2,500 km2 (970 sq mi) project license area. The reservoir is 19 km (12 mi) wide and 21 km (13 mi) long.