An ash plume erupts from the summit crater of Ulawun volcano on 21 November 1985. Smoke from burning vegetation rises from the front of an incandescent lava flow that is descending the NW flank. Strombolian eruptions had begun four days earlier and lava emission began the following day. The lava flow front bifurcated on the lower flanks of the volcano and the eastern lobe traveled slightly farther, eventually reaching 5.5 km from the summit.

Photo by Wally Johnson, 1985 (Australia Bureau of Mineral Resources).

This image is made available under the Creative Commons BY-NC-ND 4.0 license terms.

Galleries: Stratovolcanoes | Lava Flows

Keywords: eruption | lava flow | ash plume | plume | stratovolcano | cone | lava lobe

Ulawun