Cerro Azul volcano at the SW tip of J-shaped Isabela Island rises in the distance above the rim of Fernandina caldera. The flat-topped shield volcano is truncated by a deep, steep-walled 4 x 5 km summit caldera. A prominent cinder cone is located at the ENE side of the caldera and youthful lava flows cover its floor. Numerous spatter cones dot the western flanks. Fresh-looking lava flows, many erupted from circumferential fissures, descend the NE and NW flanks. Historical eruptions date back only to 1932.

Photo by Lee Siebert, 1978 (Smithsonian Institution).

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

Cerro Azul