Global Volcanism Program | Image GVP-10053
The western flanks of San Salvador rise above the Zapotitán basin beyond sugar cane fields south of Coatepeque caldera. These flanks and the rounded El Picacho peak left of the summit are part of the ancestral San Salvador volcano. The broad Boquerón edifice subsequently grew over much of the caldera rim, and lava flows traveled down the northern and southern flanks, smoothing its profile.
Photo by Lee Siebert, 2002 (Smithsonian Institution).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.