Beneath Yellowstone, A Volcano That Could Wipe Out U.S.
The Grand Prismatic Spring is beautiful but it sits just above a dangerous supervolcano. Photo: Reuters
” A team from the University of Utah have told the American Geophysical Union Fall Meeting in San Francisco that Yellowstone’s magma chamber is 2.5 times larger than previously thought.
It is an underground cavern measuring some 55 miles by 20 miles and containing between 125 and 185 billion cubic miles of molten rock.
If it blows it will wipe out America – and have enormous impacts on the rest of the world.
The university researchers described their discovery as “astounding.”
Professor Bob Smith told the BBC: “We’ve been working there for a long time, and we’ve always thought it would be bigger … but this finding is astounding.” “
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