Lahars are very destructive volcanic mudflows that can swallow everything in their paths. During the Mount St. Helens eruptions, lahars flowed up to 60 miles destroying 200 homes. Lahars are one ...

When most of us think about active volcanoes in the U.S., Mount St. Helens, Mt. Rainier and a few others will first come to mind. However, one of the most active volcanoes in the region is about a ...

Drivers may be able to rep Smokey Bear, Mt. Saint Helens or historic Whidbey Island after this year's legislative session.

The Mount St. Helens Institute introduced a specialty license plate depicting a mountain goat in the foreground with the mountain viewable in the back. Its recognizable dome from the 1980 eruption ...

All around this monstrous dome ... volcanic eruption in the previous 28 million years and hundreds to thousands of times larger than later eruptions such as Tambora, Krakatau, and Mount Saint Helens.

A number of studies have given us fascinating images showing Yellowstone’s magma reservoirs. But how are those images created ...

A new study has found surprising evidence of large bodies of magma lurking beneath long-dormant volcanoes in the Cascade ...

Lassen Volcanic National Park, ... Its namesake feature, the 10,457-foot Lassen Peak, is one of the world's largest lava dome-type volcanoes and the southernmost active volcano in the Cascade Range.

St. Helens. Mt. Adams is in the background. Volcano Eruption A volcanic mountain erupting violently. Lava, sparks, smoke total mayhem! Effect has alpha channel so feel free to place anything behind ...