Elevation : 6,903 ft (2,104 m)
Fourpeaked Mountain also known as Fourpeaked Volcano is an active stratovolcano in Alaska. The Alaska Volcano Observatory currently rates Fourpeaked as Aviation Alert Level Green and Volcanic-alert Level Normal. It is nearly completely covered by Fourpeaked Glacier. It was long a dormant volcano and believed by many geologists to be extinct; having not erupted in over 10,000 years. However, this view changed when it entered a new phase of activity by erupting on September 17, 2006.
In March, 2008, Fourpeaked saw continued, mild steaming from its summit. Since the summer of 2008 activity has significantly diminished and there has been little to no seismic activity and no eruption since the September, 2006 event.
Before the phase that began September 17, 2006, Fourpeaked had been dormant for over 10,000 years, meaning that its last known eruption was before 8000 BC.