"The broad isthmus between Lagonoy Gulf and San Miguel Bay in SE Luzon is occupied by the isolated Mount Isarog volcano. The 1966-m-high andesitic stratovolcano is truncated by a 2.5-km-wide crater that is breached to the east along a narrow valley drained by the Quinarag River. The age of the most recent eruptions from Isarog are not known, but solfataric areas occur within the Maalsom vent, which displays gas seepages, warm springs, and steaming vents."  -Smithsonian Volcano Archive
Back to Top