The view of the 1870 vent and the San Pedro-Ceboruco graben is from the Ceboruco summit. The small lava dome to the lower right and the unvegetated lava flow to the lower left were emplaced during the 1870-75 eruption. The Cerro San Pedro lava dome on the horizon directly above the 1870 dome was constructed within the 7 x 10 km San Pedro caldera. The peak immediately left of Cerro San Pedro is Cerro Tetillas.

Photo by Lee Siebert, 1997 (Smithsonian Institution).

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

Keywords: lava dome | crater | caldera

Ceboruco

San Pedro