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 ...

VANCOUVER, Wash. – Nearly 45 years after Mount St. Helens’ eruption sent almost 90 billion cubic feet of debris into the upper Toutle Valley, millions of tons of sediment still pour into the Cowlitz ...

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

the colossal eruption of Mt. St. Helens in 1980 blasted away an entire mountainside. Over 200 square miles of pristine forest were buried under millions of tons of lava, ash, mud, and avalanche ...

It's common knowledge that Yellowstone Park sits on top of an ancient supervolcano, but what happened last time it erupted?

The most recent, 640,000 years ago, was a thousand times the size of the Mount St. Helens eruption in 1980 ... filled in with lava flows and ash from smaller eruptions (the most recent was ...

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 ...

When Kilauea erupted on the Big island of Hawaii in 2018, the lava flows were hotter than 2,000 ... like the thicker dacite lava that erupts at Mount St. Helens in Washington state.

Nearly 45 years after Mount St. Helens’ eruption sent almost 90 billion ... still pour into the Cowlitz River each year. And that flow is causing costly problems for towns along the way.

Nearly 45 years after Mount St. Helens’ eruption sent almost 90 billion ... still pour into the Cowlitz River each year. And that flow is causing costly problems for towns along the way.