This prominent pinnacle is an eroded remnant of a tuff cone on Bartolomé Island, off the east coast of Santiago Island. A wide variety of volcanic features flanks Sullivan Bay, one of the most visited boat anchorages in the Galápagos Islands. These include tuff cones and cinder cones, a dissected solidifed lava lake, and vast fields of youthful pahoehoe lava flows.

Photo by Lee Siebert, 1978 (Smithsonian Institution).

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

Santiago