Add Yahoo as a preferred source to see more of our stories on Google. he Mount Jackson Rhyolite Series vitrophyre at Gibbon River This photo shows the exposure of the Mount Jackson Rhyolite Series ...

Slumbering five miles beneath the surface of Yellowstone National Park in Wyoming is a timebomb more than 640,000 years in the making. The Yellowstone supervolcano is a vast reservoir of magma with ...

DENVER (KDVR) — On Tuesday, visitors at Yellowstone National Park fled when a hydrothermal explosion occurred a few miles north of the famous Old Faithful geyser. No one was injured, but the event ...

Earthquakes rattle the ground while cannon-like explosions shoot burning rock and ash into the air at speeds upwards of 600 miles per hour. The burning rocks crash to the earth, setting the grass and ...

Add Yahoo as a preferred source to see more of our stories on Google. As alarming as the video and subsequent damage seemed, the phenomenon is a normal, common occurrence at Yellowstone, happening at ...