"Lake Toba (Indonesian: Danau Toba) is a lake and supervolcano, 100 kilometres long and…This extension is a Google Chrome Theme.
"Lake Toba (Indonesian: Danau Toba) is a lake and supervolcano, 100 kilometres long and 30 kilometres wide, and 505 metres (1,666 ft) at its deepest point. Located in the middle of the northern part of the Indonesian island of Sumatra with a surface elevation of about 900 metres (2,953 ft), the lake stretches from 2.88°N 98.52°E to 2.35°N 99.1°E. It is the largest volcanic lake in the world." (source: wikipedia.org)