Lake Toba, estimated by the experts, has been formed after the eruption of the supervolcano around 75 thousand years ago. At that time, an estimated 2.8 million m3 of volcanic materials spewed out of Mount Toba erupted, the volcanic dust has been spread by the wind until covered half part of the Earth. The explosion occurred during 1 week and throw the dust up to 10 kilometers above sea level.
Communities around Lake Toba believe that Toba is the resident of Namborru - seven goddess Bataks' ancestors. If the Batak tribe will perform a ceremony around the lake, then they must pray and ask for permission beforehand to Namborru.
Lake Toba is one of the widest lake in Southeast Asia, and the second largest after Lake Victoria in Africa. Formed from the eruption of Mount Toba, producing a crater measuring 1,145 km2, with depths up to 450 m. The ambiance was cool refreshing expanse of clear blue water, and the enchanting view of the green mountains is a giant lake that is 900 meters above sea level.