Lake Toba is the largest lake in Southeast Asia, once created by an enermous eruptin less tahn 100.000 years ago. The eruption was approximately 8.000 times. The lake covers 1.265 square km excluding Samosir Island and is 90 km long. The depth is in on average 450m and up to 900m in some places. The lake situated at an altitude of 906m above sea level. The steep coastline interspersed with valleys creates wonderful scenery.