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Indonesia » Indonesian Volcanoes » Lake Toba Volcano
Lake Toba Volcano
by: Editorial Team

The innocent-looking Lake Toba with its friendly and hospitable surroundings, despite the recent issues of industrial pollution, is actually remnants of a life-threatening volcano thousands of years ago. So life-threatening, in fact, that not only groups of people were threatened by it, but the human race in general.

The most extreme eruption of the Toba Volcano is its latest, which is 73,000 years ago, it being the largest to hit the earth in two million years. From its 18 x 60 miles caldera, we could only imagine what the massive eruption was like. It is calculated that the lava flow covered 20,000 to 30,000 km2 of the Sumatra Island, ranging from coast to coast with an average thickness of 50 meters.  The ashes of Toba Volcano were found in Central India, 3,000 Kilometers away from the location, its erupted magma was calculated to have reached the quantity of 2,800 cubic km.

The effect of Toba eruption was phenomenal.  Vast quantities of earth’s surface were affected. The ‘supervolcano’ had, in fact, become a base for an evolutionary theory labeled ‘The Toba Catastrophe’ which states that the whole human race was deeply affected, annihilated in fact,  by the particular eruption except for those residing in the African region, and that consequently the modern human race is mostly descended from Africa. The damage done by Toba eruption covers several areas, from the direct destruction by pyroclastic flows, massive quantities of ash disposed in land surfaces and killing all ecosystems, to the painfully death-causing volcanic winters.
Particles and gases from the eruption were said to have remained in the air for six years, thus causing reduction of global temperature which may be as drastic as 10 degrees Celcius, although this is hard to verify since the earth had been experiencing a change of climate before the Toba erupted.

The Samosir Island, in the middle of Lake Toba, was formed around 60,000 years after the eruption. The magma pressures from beneath the lake were starting to build up again, thus causing the ground to be pushed up and appearing above in the form of an island.

Today, there is no sign of such hazardous possibility to appear in Lake Toba, except for two small, yet active volcanoes and several hot springs for the tourist’s enjoyment. The next eruption of Toba is predicted to occur around 300 thousand years from now.


About The Author

Editorial Team, Editor

This article is written by Streetdirectory Editorial team. Robert J Steiner manages Streetdirectory.co.id & FlowerAdvisor.co.id, well known for for online Flowers & Gifts in Indonesia.

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