Lake Toba
 Lake Toba (Indonesian: Danau Toba) is a lake and supervolcano. The lake is 100 kilometres long 30 kilometres wide and up to 505 meters (1666 ft) deep. Located in the middle of the northern part of the Indonesian island of Sumatra with a surface elevation of about 900 metres (2953 ft) the lake stretches from 2.88°N 98.52°E﻿ / 2.88; 98.52 to 2.35°N 99.1°E﻿ / 2.35; 99.1.