English: The Aral Sea, the fourth largest lake in the world, can be seen in this low-oblique, south-looking view. When this photograph was taken by the STS-51-F mission, the Aral Sea covered an area of approximately 26 000 square miles (67 000 square kilometers), was approximately 260 miles (420 kilometers) long, 175 miles (280 kilometers) wide, and had an average depth of 33 feet (10 meters) and a maximum depth of 220 feet (70 meters).