Supervolcano A supervolcano is a large volcano that has had an eruption of magnitude , which is the largest value on the Volcanic Explosivity Index VEI This means the volume of deposits for that eruption is greater than , cubic kilometers cubic miles Supervolcanoes occur when magma in the mantle rises into the crust but is unable to break through it and pressure builds in a large and growing Supervolcanoes MAPPED Where the world s biggest volcanoes Aug , Lake Toba is one of the world s biggest supervolcanoes and is located in Sumatra, Indonesia It last erupted , years ago saw , cubic km of material ejected into the atmosphere. Supervolcanoes.Toba Lake,Yellowstone Caldera Volcanic Supervolcanoes.Toba Lake,Yellowstone Caldera,Long Valley and Taupo Lake The large supervolcanoes around the world such as Lake Toba,Northwestern Sumatra Island,Indonesia the world famous Yellowstone Caldera,Wyoming,USA Long Valley,California,USA and Taupo Lake at the North Island,New Zealand. California supervolcano may be as dangerous as Yellowstone s GALLERY Check out the slideshow above for details on the supervolcanoes of America If it all blasted out of the ground, that would make Long Valley located south of Mono Lake near the Toba The Rising Super Volcano Volcano World Oregon Toba The Rising Super Volcano Supervolcanoes are usually not on your radar unless you ve got a special interest in them If you re in North America, than The hill became an island in the middle of the lake, and it was named Samosir Island The son was believed to be the ancestor of Batak People of North Sumatera. Supervolcano Not to Blame for Humanity s Near Extinction Apr , About , years ago, the Toba Supervolcano erupted in what is now Indonesia After the eruption, the ground collapsed and left behind a depression called a caldera, which is not filled by Lake Supervolcanoes Around the World Owlcation Mar , Supervolcanoes Around the World Updated on August , Leah Lefler Contact Author The Bennett Lake supervolcano complex is located in British Columbia The site is ancient and erupted million years ago the supervolcano is extinct and exists in the Coast Mountains It is frightening to read that Toba is a super volcano USGS Volcano Hazards Program YVO Yellowstone USGS Volcano Hazards Program Yellowstone Volcano Observatory USGS Volcano Science Center Yellowstone FAQs Questions About Supervolcanoes Questions About Supervolcanoes USGS HOME Contact USGS such as the magnitude . Hebgen Lake quake, the largest historical earthquake in the intermountain region, and the magnitude . Toba catastrophe theory The Toba supereruption was a supervolcanic eruption that occurred about , years ago at the site of present day Lake Toba in Sumatra, Indonesia It is one of the Earth s largest known eruptions Toba Volcano by George Weber at the Wayback Machine archived April , Lake Toba Supervolcano coming alive, hot steam, smelling Jun , Lake Toba Indonesian Danau Toba is a lake and super volcano, kilometers long and kilometers wide, and meters , ft at its deepest point Located in the middle of the northern part of the Indonesian island of Sumatra with a surface elevation of about meters , ft.