What is a Supervolcano
The expression “supervolcano” infers a volcanic that has the possibility to create an eruption of magnitude 8 on the Volcano Explosivity Index (VEI) based on past eruptions. The term “supervolcano” became popular with science fiction fans and doomsday preppers in the last 20 years.
Yellowstone – The biggest known eruption at Yellowstone (about 2.1 million years ago) had a volume of 2,450 cubic kilometers however not all Yellowstone eruptions are that large, actually most have been much smaller. Yellowstone is considered a supervolcano because in the past it has created eruptions that measure 8 or more VEI. Yellowstone area includes Heise Volcanic Field, Wah Wah Springs, and Lava Creek.
Lake Toba, Indonesia –