The dark-colored lava flow in the center of the photo originated during an eruption in 1917 from a vent high on the northern flank of Boquerón volcano (upper right). On June 6, 1917 an eruption began from NW-trending fissures on the upper north flank of Boquerón. A chain of cinder cones formed and a lava flow traveled to the northwest, cutting the railroad between Quezaltepeque and Sitio del Niño. Eruptive activity also occurred at the summit crater of Boquerón, where a small conelet formed on the crater floor. El Picacho peak is at the left.

Photo by Giuseppina Kysar, 1999 (Smithsonian Institution).

This image is made available under the Creative Commons BY-NC-ND 4.0 license terms.

San Salvador