This photo of Bagana shows the southwest slopes of the volcano and was taken in October, 1964. Photo courtesy of Jack Lockwood, U.S. Geological Survey. The first known eruption of Bagana was in 1842. Since then there have been at least 22 eruptions. Bagana has been erupting since 1972, creating slow-moving lava flows.
Some explosive eruptions produce nuee ardentes and voluminous ash clouds.
An overflight of Bagana in August of 1995 revealed lava flows on the southwest flank on the volcano. Location of major volcanoes on Bougainville Island.