Lake Batur

With an area of about 140 sq. km (54 sq. mi.), the crater of Gunung Batur is one of the largest volcanic craters in the world. It was formed millions of years ago by the collapse of a chamber containing volcanic magma which had been partly emptied by an eruption. In the center of the caldera is Lake Batur, which is now up to 100 m (330 ft) deep.