In 1980, Mount St. Helens erupted, killing dozens and forever changing how the US monitors earthquakes. The volcano is still active but not erupting.

When Mount St. Helens erupted in 1980, the blast released 3.3 billion cubic yards of earth from the mountain.

The so-called earthquake swarm at Mount Rainier dwindled Friday but has surpassed the last large event at the volcano in 2009 ...

At the 13th Moon Gravity Well, his debut live album with the Barry Walker Unit, was recorded on a geologically auspicious ...

Among the smallest of the animals that live on Mount St. Helens, the northern pocket gopher has been credited with aiding in the restoration of Mount St. Helens. "Gopher to the Rescue," a newly ...

Color photos shot in 1980 from the cockpit of a Cessna 150 reveal the magnitude of Mount St. Helens' ash and destruction amid volcano's eruption.

Sunday marks 45 years since Mount St. Helens erupted in Washington state. The deadly eruption happened shortly after 8:30 a.m. on May 18, 1980, following months of small explosions and earthquakes ...

Where is Mount St. Helens? Mount St. Helens is in Skamania County, Washington. The volcano formed through four eruptive events starting about 275,000 years ago, according to the USGS.

Bill Peterson Revegetating Mt. St. Helen In May 1980, a magnitude 5.1 earthquake caused an avalanche on Mount St. Helen in Washington State. With ...

Sunday marks 45 years since Mount St. Helens erupted in Washington state. The deadly eruption happened shortly after 8:30 a.m. on May 18, 1980, following months of small explosions and earthquakes ...

When Mount St. Helens erupted in 1980, the blast released 3.3 billion cubic yards of earth from the mountain.