The smooth flank of Darwin shield volcano, seen here from the east coast of Fernandina Island, is modified by a cluster of tuff cones near the SW base of the volcano. The Tagus and Beagle tuff cones (right center horizon) were formed by phreatomagmatic eruptions along the SW coast of Darwin. Fresh black lava flows erupted from fissures on the flanks of Darwin volcano descend to the sea on both sides of the tuff-cone complex.

Photo by Lee Siebert, 1978 (Smithsonian Institution).

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

Darwin