Global Volcanism Program | Image GVP-00500
Plumes rise from a slow-moving andesite lava flow descending the NW flank of Bagana on 26 April 1988. The flow at that time had been moving for about 3 or 4 years and is typical of the lava extrusion that began in 1972. This volcano was largely constructed by an accumulation of viscous andesite lava flows like this one.
Photo by Wally Johnson, 1988 (Australia Bureau of Mineral Resources).