Toba lake located in North Sumatra Province, Indonesia. Lake toba is one of the most popular tourist attractions in Indonesia. Lake Toba is one of the largest lake in the world and this lake is the largest lake in southeast Asian. The lake is located around 905 meters above sea level (mdpl) with a depth of 400 meters. This lake has a length of 100 kilometers and 30 kilometers wide. In the middle of this lake there is a large island, called Samosir Island. This lake was surrounded by six districts. Six districts were Simalungun District, District Samosir, North Tapanuli, Humbang Hasundutan, Karo District, and Dairi.
This place is high enough and cool. Lake Toba is located on the island of Sumatra is not only a local tourist destination but also a tourist destination overseas.
The beauty of Lake Toba was amazing. The lake is surrounded by hills so the atmosphere around the lake it is comfortable. The air is cool and fresh. If you visit there, you can enjoy the beauty with a swim or rent a motor boat to circle around the lake.
Uniquely, Lake Toba has a cycle of 110-280 years of water replacement. In fact, the lakes in the world only has water rotation cycle average of 17 years. This shows, when the crisis hit the water due to climate change, the source of fresh water of Lake Toba is potentially useful for household and industry.