Near the south boundary of Yellowstone National Park is a curious ash flow deposit of unknown origin. Geologists from Montana State University took on the challenge of solving the mystery.
Near the south boundary of Yellowstone National Park is a curious ash flow deposit of unknown origin. Geologists from Montana State University took on the challenge of solving the mystery.
EXCLUSIVE: While millions of people live at the feet of volcanoes, their activity needs to be closely monitored to prepare local communities and the whole world for potentially devastating eruptions.