Lake Toba one of the Largest and Deepest lakes in S.E asia It is 76km wide and some parts in the lake has a depth of 450 meters. The water was amazing cool and clean. We stayed on an Island the size of Singapore but the population is only 10,000 its called Samosir. One of the most beautiful places to go to, and to make it better the locals are lovely, this is a why we stayed there for 12days. A MUST SEE SPOT!!!