Global Volcanism Program | Image GVP-00462
The symmetrical Ulawun is one of Papua New Guinea's most frequently active volcanoes. Ulawun and Bamus volcano (upper left) are the two highest volcanoes of the Bismarck Archipelago, and are known as the Father and South Son volcanoes, respectively. The upper 1,000 m of Ulawun is unvegetated. Historical eruptions date back to the beginning of the 18th century.
Photo by Wally Johnson (Australia Bureau of Mineral Resources).