The triangular-shaped Pocdol Mountains volcanic range, also known as the Bacon-Manito complex, covers an area of about 225 km2 between Saragon Bay and Albay Gulf in southern Luzon, SE of Mayon volcano. Volcanic cones in the western part of the complex are dissected, but those in the eastern part are morphologically youthful. Several Pleistocene K-Ar dates have been obtained from the volcanic complex. The age of its latest eruptions is not known, but a fumarole field that contains a geyser is located near the summit of the compound, dominantly andesitic volcanic complex.