The caldera of Cerro Azul volcano is seen from the east, with the slopes of Sierra Negra volcano in the foreground. The steep-walled 4 x 5 km nested summit caldera complex is 650 m deep. Dark-colored, fresh-looking lava flows erupted from NE flank vents can be seen at the right, and a SE flank fissure erupted in 1998, producing a lava flow that reached to within 2 km of the coast.

Photo by Patricio Ramon, 2003 (Instituto Geofisca, Escuela Politecnica Nacional).

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

Cerro Azul