This is a List of inactive volcanoes in the Philippines. Volcanoes with no record of eruptions are considered as extinct or inactive. Their physical form since their last activity has been altered by agents of weathering and erosion with the formation of deep and long gullies. Inactive does not necessarily indicate the volcano will not erupt again. Mount Pinatubo had no recorded historical eruption before its cataclysmic 1991 eruption.