A Supervolcano Waking Up In The USA -6/8/2017
Volcano Calbuco in southern Chile erupted for the first time in more than five decades on Wednesday.
Volcanoes go quiet before they erupt, says study - The study involved monitored a sequence of eruptions at the Telica Volcano in Nicaragua.
Picture of the eruption of the Castle Geyser, in Yellowstone National Park, in Upper Geyser Basin.
July 22, 1980: Mount St Helens in Washington erupts. A Yellowstone caldera eruption
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