"The massive stratovolcano of Mount Natib, at the northern end of the Bataan Peninsula, is truncated by a 6 x 7 km caldera. The latest dated eruptive products are 69,000 +/- 27,000 years old (Ebasco Services 1977), but sampling is not in sufficient detail to determine the date of the latest eruptions. Ruaya and Panem (1991) listed the age of the dominantly andesitic volcano as late Pliocene to Pleistocene, but gave a probable age of the latest activity as Holocene to upper Pleistocene. Five thermal areas are present in the summit region."  -Smithsonian Volcano Archive
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