Glacier Peak, 20 miles east of Darrington, is classified by the U.S. Geological Survey (USGS) as a “very high threat” volcano due to its location near Darrington, Concrete, and Arlington.

It is one of six volcanic systems located under Europe's biggest glacier Vatnajokull. In the event of a subglacial eruption, there is a risk of an ash eruption and subglacial flooding from under ...