Ten months of unrest at Mount Spurr could be a sign of an upcoming eruption from a side vent or, less likely, from the main ...

This 2023 satellite photo shows the heart-shaped Spirit Lake, which was transformed by the cataclysmic eruption of Mount St.

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 ...

Mount Rainier is central to Tacoma’s identity, so much so that it appears on the city’s logo. But as CNN recently reported, the striking mountain is also an active volcano — and no one knows when it ...