Santo Tomas volcano on Luzon Island, Philippines, is one of the highest stratovolcanoes of the country. It has many volcanic vents and fissures.
A report about an eruption or "displacement" in the region on January 4, 1641, described as an outburst of water accompanied by an earthquake, probably is related to the major eruption of Parker volcano in southern Mindanao on the same day.
Note: another volcano with the same name exists in Guatemala.
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