Nearly 45 years after Mount St. Helens’ eruption sent almost 90 billion cubic feet ... Mountain runoff carries ashen remains of what was the volcano’s peak into the North Fork Toutle River and down to ...

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

A teenager when he began scuba diving in the shadow of Mount St. Helens, he remembers the lake as it was before the May 1980 eruption, before the top 1,300 feet of the volcano—more than three ...

Widely considered the most disastrous volcanic eruption in U.S. history, the event drastically altered the surrounding landscape. As the region slowly recovered, Mount St. Helens became a tourist ...