It would explode with a force a thousand times more
powerful than the Mount St Helens eruption in 1980.
Spewing lava far into the sky, a cloud of plant-killing
ash would fan out and dump a layer 10ft deep up to 1,000 miles
away.
Two-thirds of the U.S. could become uninhabitable as toxic
air sweeps through it, grounding thousands of flights and forcing
millions to leave their homes.
This is the nightmare that scientists are predicting could
happen if the world’s largest super-volcano erupts for the first
time in 600,000 years, as it could do in the near
future.
Yellowstone National Park’s caldera has erupted three
times in the last 2.1million years and researchers monitoring it
say we could be in for another eruption.
They said that the super-volcano underneath the Wyoming
park has been rising at a record rate since 2004 - its floor has
gone up three inches per year for the last three years alone, the
fastest rate since records began in 1923.