The flat-topped rhyolitic Los Ocotes lava dome (center) was erupted on the southern flank of Tepetiltic volcano about 100,000 years ago and is the youngest product of that complex. Extrusion of the dome blocked drainages to form Laguna San Pedro, out of view to the left. The rim of Tepetiltic caldera forms the right horizon. Los Ocotes is seen here from the SE along Highway 15 where it crosses the blocky andesitic El Ceboruco lava flow in the foreground, which traveled 8 km from Ceboruco volcano.

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

Tepetiltic

Ceboruco