THE Philippines straddles the western fringes of the Pacific Ring of Fire where most of strong earthquakes and volcanic eruptions occur.
Since the 1600s, the Philippine Institute of Volcanology and Seismology said the country has experienced 106 earthquakes with a magnitude of 6.0 or higher. Of this number, the deadliest earthquakes took place in the last 50 years.
August 2, 1968: A magnitude-7.3 tremor shook Casiguran and some areas in Luzon, including Manila, where 268 tenants of six-story Ruby Tower in Binondo, Manila were killed when it collapsed.
August 17, 1976: A 7.9-magnitude earthquake and resulting tsunami hit the Moro Gulf, leaving over 5,000 people dead.
July 16, 1990: Parts of Luzon, particularly Baguio City and Cabanatuan City, were damaged following a 7.9-magnitude earthquake. At least 1,200 people died from the quake.
February 6, 2012: Nearly 60 people were killed when a 6.9-magnitude earthquake hit Negros Oriental
October 15, 2013: Centuries-old churches in Bohol and Cebu crumble down to a 7.2-magnitude tremor, which also killed 222 people and injured 976 others. (Sunnex)