Scientists have found previously undocumented ash deposits buried beneath the Lava Creek Tuff in Wyoming — and at least one ...

Mount Spurr, which scientists say is likely to erupt in the coming weeks or months, is about 80 miles west of Anchorage. But ...

When Mount Spurr erupted in 1992, ash spewed some 50,000 feet into the air and blanketed much of the Matanuska-Susitna Valley ...

Multiple small earthquakes were detected beneath a massive US volcano this week, as experts warn may be 'moving closer to an ...