The degassing, growing lava dome of Merapi volcano on 20 January 1954, as viewed from the SE, two days after a major pyroclastic flow that caused 64 fatalities. Lava dome growth had begun on 2 March 1953, accompanied by frequent pyroclastic flows (block-and-ash flows). Several additional cycles of lava dome growth and destruction continued until December 1958.

Photo by Suryo, 1954 (Volcanological Survey of Indonesia).

Keywords: lava dome | eruption | gas | gas plume | emissions | stratovolcano | eruption

Merapi