Three miles beneath Yellowstone National Park hides a chamber of molten hot lava. Every million years or so, the pressure build-up is too much and the area erupts in a volcanic explosion that can level mountains.
Three miles beneath Yellowstone National Park hides a chamber of molten hot lava. Every million years or so, the pressure build-up is too much and the area erupts in a volcanic explosion that can level mountains.
General Note
Originally released by BBC Worldwide Learning, 2010.
Streaming video file encoded with permission for digital streaming by Infobase on April 18, 2015.