Magma from the mantle finds its way to the surface, where it erupts as lava or ash and gas—sometimes in spectacular spurts, ...

This is a repost from the archives, an older post by Henrik which has been updated to reflect more recent findings. Did you know there are 255 volcanoes or volcanic features listed in the US?

Remembering the deadly Mount St. Helens eruption 45 years later Mount St. Helens erupted 45 years ago, causing the deadliest volcanic disaster in U.S. history. Adel Toay, Drew Mikkelsen, Leah ...

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.

The Mount St. Helens Visitor Center near Castle Rock closed for renovations in 2024, and is set to reopen with brand new exhibits expanding on the natural history of the region.

Mount St. Helens, long known for its pretty silhouette and serene scenery, took on a new personality. The volcano “awakened,” it “cleared its throat,” it “hurled” debris.

In the Pacific Northwest, Washington offers the most dramatic scenery. The best place to enjoy the outdoors is in a National Park Service site. Visitors can find beaches, temperate rainforests and ...

VANCOUVER, Wash. — Steam seeping from a fracture atop the lava dome in Mount St. Helens' crater and the mountain's first noteworthy seismic activity since 2004 have caught scientists' attention ...

The West Coast is full of breathtaking landscapes. These national parks are a must-see for outdoor adventurers in California, Oregon, and Washington.

Andy Goodwin recently stationed himself at the top of Mount St. Helens, where he usually spends several hours each week educating climbers about one of the Pacific Northwest’s most spectacular ...

The U.S. Geological Survey puts on the weeklong camp in conjunction with the Mount St. Helens Institute. The students hiked to places on the mountain to see large mounds called hummocks, and ...