Geology
Bicol Region is volcanic in origin and part of the Pacific Ring of Fire. Known as the Bicol Volcanic Arc or Chain, the volcanoes are the results of the Philippine Sea Plate subducting under the Philippine Mobile Belt, along the Philippine Trench. Volcanism is evident by the number of hot springs, crater lakes, and volcanoes that dot the region starting from Mount Labo in Camarines Norte to the Gate Mountains in Matnog, Sorsogon. Mayon Volcano is the most prominent of the volcanoes in the region, famous for its almost perfect conical shape and for being the most active in the Philippines. Its eruptions have repeatedly inflicted disasters on the region, but during lulls in activity, it is a particularly beautiful mountain. The southernmost tip of the peninsula is dominated by Bulusan Volcano, the other active volcano in the region. Tiwi in Albay and the Bacon-Manito area between Sorsogon and Albay are the sites of two major geothermal fields that contribute substantially to the Luzon Power Grid.
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