Lake Toba (Indonesian: Danau Toba)
is a lake and supervolcano. The lake is 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....
