Global Volcanism Program | Image GVP-01758
Bulusan, seen here from the W, is the southernmost volcano on the island of Luzon. It has formed within the 11-km-wide Irosin caldera along with other cones and domes. Frequent moderate explosive eruptions have been recorded since the mid-19th century from craters at the summit.
Photo by Chris Newhall, 1984 (U.S. Geological Survey).