Scientists have revealed the supervolcano lurking beneath Yellowstone National Park is twice as big as previously thought Galleria Scientists have revealed the supervolcano lurking beneath Yellowstone National Park is twice as big as previously thought Senza categoria Scientists have revealed the supervolcano lurking beneath Yellowstone National Park is twice as big as previously thought Visit Sassuolo2018-01-21T18:44:58+01:00Senza categoria|