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USA | Sat, 28 Jun 2014 | By clare-tamea | Views [733]
Yellowstone is one of the world's largest, most active and most explosive volcanoes. It hasn't looked much like a volcano since the last huge explosion, 650,000 years ago, which blew out a huge area, covering a lot of the States with ash. Nowadays, ... Read more >
Tags: super-volcano, volcano, yellowstone