The Philippines has a high number of volcanic activity because it is located at the Ring of Fire. The Ring of Fire is a large basin-like area in the Pacific Ocean where there are numerous volcanoes, trenches (both oceanic and mountain trenches), h... read more
There are at least 23 active volcanos in the Philippines, and the most common volcanic hazards range from pyroclastic flows, ash clouds and ash fall, lava, lava bombs, and everything else you can imagine. The most active volcano, Mt Mayon, erupted today with an ash cloud that went up 2.5 km. read more
Lahars (mud flows) are very common in the Philippines, because the archipelago has often heavy rains. Tsunamis accompany eruptions in the Philippines more often than in any other volcanic region. Since the establishment of PHILVOLCS (the Philippines Institute of Volcanology and Seismology), the impact and damage of the eruptions has been significantly reduced. read more
whereas Philippines is destructive. > California is not associated with volcanic hazards, plates are moving past each other. > Philippines destructive boundary does have volcanoes due to subduction and melting; plates / movements > Partial melting and viscous magma resulting in explosive, dangerous eruptions, may give details. read more