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 ...

This photo shows the exposure of the Mount Jackson Rhyolite Series vitrophyre at Gibbon River. Boulders of weathered, lichen-covered rock show how easy it is to overlook these new units. (Photo by Liv ...

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 ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. As alarming as the video and subsequent ...