Left: A close-up of a crack in the volcanic surface of a cooled lava flow from the crater of Mt. St. Helens.

“High rates of seismicity, interpreted as recharge, have been observed in the past at Mount St. Helens and at other volcanoes ...

An curved arrow pointing right. Scientists are baffled as to where Mount St. Helens gets its lava from. Though the volcano is part of a cluster of volcanoes known as the North American Cascade Arc ...

A geologist from Eastern Washington State College returned from a research trip and warned that one of Washington’s volcanoes ...

St. Helens is by far the most active volcano in the Cascades and presents the highest likelihood of the next future eruption in our region,' Pacific Northwest Seismic Network Director, Harold Tobi ...

The U.S. Forest Service wants to keep history from repeating itself at Mount St. Helens. Work is about to begin to reduce the risk of flooding at the largest lake created by the volcano’s 1980 ...

A very common case study for volcanoes is the eruption of Mount St Helens in the USA in 1980. Other case studies include the eruption of Mount Etna in Sicily in 1974 and Heimaey eruption in ...

Redoubt—as well as many other famous volcanoes, including Mt. St. Helens and Mt. Vesuvius, are all andesitic volcanoes. Here, get to know the major features and products of an andesitic volcano ...