(Daily Mail) While the Long Valley Caldera in California may seem like a vast and lush canyon, what lurks underneath has shocked scientists.
Underneath the earth of the 20-miles-long and 11-miles-wide crater lies a whopping 240 cubic miles of semi-molten magma, a new report suggests.
https://t.co/X6Dk1baZdm
California Supervolcano Has Geologists Wondering: Is It Waking Up? #volcanodance— Mark Michael (@MarkMichaeldom) August 12, 2018