The Toba lake was a volcanic lake with the measurement of the area of 100km x 30km in North Sumatra, Sumatra, Indonesia. In the middle of this lake was gotten a volcanic island was named the Samosir Island. The Toba lake had since long before become the area of the aim of the important tour in North Sumatra apart from the Lawang Hill and Nias, attracted domestic tourists and foreign countries.
Estimated the Toba Lake happened during the explosion around 73,000-75,000 last year and was the eruption supervolcano (the volcano super) that was newest. Bill Rose and Craig Chesner from Michigan Technological University estimated that volcanic materials that were spewed out the mountain totalling 2800km3, with 800km3 the rock ignimbrit and 2000km3 volcanic ash that was estimated was blown the wind to the west for 2 weeks. Volcanic dust that was blown the wind spread to half earths, from China as far as South Africa. His eruption happened for 1 week and his dust throw reached 10 KM on sea level.
This incident caused the mass death and to several species also was followed by the extinction. According to some DNA proof, this eruption also menyusutkan the amount of humankind until approximately 60% from the number of populations of earth humankind at that time that is approximately 60 million humans. The same eruption took part in causing the occurrence of the ice time, although the experts were still debating the matter.
After this eruption, was formed the caldera that afterwards was filled by water and to that now is known as the Toba Lake. The pressure above by magma that did not yet go out caused the Samosir Island emergence.
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