Lake above the lake. That’s how many people call Lake Sidihoni, which is located on Samosir Island, which is surrounded by Lake Toba, North Sumatra.
According to research, this lake was once a forest and swamp area. Because the trees were cut down to make the surrounding land landslide. Gradually it turns into a basin filled with water.
In its history, this lake has also experienced severe drought. Among other things happened in 1943, 1958 and 2004 when the Aceh tsunami occurred.
Usually the drought occurs because of the presence of new holes that form at the bottom of the lake so that it absorbs water. For example, in 2004, the bottom of the lake was eroded and formed a large hole 5 meters in diameter.…