Is Mount Pinatubo still active?

Remains of a 2.2 by 2.8 mile (3.5 by 4.5 km) wide caldera from the old Pinatubo are still standing in the area today. Several of the surrounding volcanoes were actually vents of the ancestral Pinatubo. These include the Mt. Negron dome, the Mt. read more

Active = has a regular periodic activity. It needs not be strong. But it has to have activity on a regular basis. Dormant = had an activity in recorded history. Extinct = has no known activity in recorded history. Given the definition above, Mt. Pinatubo will fall under the dormant category. read more

Mount Pinatubo Volcano had been dormant for 400 years. Before 1991 Pinatubo was an inconspicuous volcano which was known to be active in the past 1000 years and was the site of a failed geothermal development. read more