This barren lava flow issued from a fissure vent on the SE flank of San Miguel in 1819. The flow traveled about 5 km and covered a broad area below the SE base of the volcano, extending down to 25 m above sea level. Emplacement of the lava flow necessitated the construction of a new road at the base of the volcano.

Photo by Dick Stoiber, 1971 (courtesy of Bill Rose, Michigan Technological University).

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

San Miguel