Near the center of this scene is the mountain lake Kara-Kul, located in eastern Tajikistan, high in the Pamir Mountain Range near the Afghan border. The 25-kilometer (16-mile) diameter lake sits at an elevation of about 4,000 meters (about 12,000 feet) above sea level. Kara-Kul was formed from a meteorite impact approximately 25 million years ago, leaving a crater with a rim diameter of 45 kilometers (28 miles). Islands formed from the central uplift can be seen in the northern and southern parts of the lake. Interestingly, the Kara-Kul impact structure remained unidentified until it was discovered though studies of imagery taken from space. This image was taken by the Landsat 7 satellite on September 28, 2001.
Lake Jänisjärvi is a roughly oval-shaped lake, some 13 by 17 kilometers (8 by 11 miles) across, in northwestern Russia, near the Finnish border. The basin for this lake was formed hundreds of millions of years ago by a meteorite impact.