The most destructive eruption of Mayon occurred on February 1 , 1814 ( VEI = 4 ) . Lava flowed but less than the 1766 eruption . The volcano belched dark ash and eventually bombarded the town of Cagsawa with tephra that buried it . Trees burned , and rivers were certainly damaged . Proximate areas were also devastated by the eruption , with ash accumulating to in depth . In Cagsawa , 1,200 locals perished in what is considered to be the most lethal eruption in Mayon 's history according to PHIVOLCS . The eruption is believed to have contributed to the accumulation of atmospheric ash together with the catastrophic 1815 eruption of other volcanoes like Indonesia 's Mount Tambora , leading to the Year Without a Summer in 1816
Year Without a Summer
Year Without a Summer
Mayon