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Indonesia

THIS IS SUMATRA ISLAND

World’s largest volcanic lake, Indonesia’s largest lake

Lake Toba is a large natural lake in North Sumatra, Indonesia, occupying the caldera of a supervolcano. The lake is located in the middle of the northern part of the island of Sumatra, with a surface elevation of about 900 metres. The lake is about 100 kilometres long, 30 kilometres wide, and up to 505 metres deep. Lake Toba Caldera is one of the twenty Geoparks in Indonesia, which is recognised in July 2020 as the UNESCO Global Geopark.

74,000
years ago

Lake Toba is the site of a supervolcanic eruption estimated at VEI 8 that occurred 74,000 years ago, representing a climate-changing event. It is the largest-known explosive eruption on Earth in the last 25 million years. According to the Toba catastrophe theory, it had global consequences for human populations; it killed most humans living at that time and is believed to have created a population bottleneck in central east Africa and India, which affects the genetic make-up of the human worldwide population to the present.

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