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).

This image is made available as a Public Domain Work, but proper attribution is appreciated.

Bulusan