Ash falls at the left from a strombolian eruption column emanating from the summit crater of Cerro Negro volcano in 1968. At the same time incandescent spatter (lower right) is ejected from a small vent on the south flank of the cone. The 1968 eruption began on October 23 and lasted until December 15. The south-flank vent also fed a lava flow that traveled 1.5 km.

Photo by William Melson, 1968 (Smithsonian Institution).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Cerro Negro