The Laguna Las Ninfas-Laguna Verde volcanic complex is seen here from the NW with steam plumes of the Ahuachapán geothermal field in the midground. The 5-km-wide Concepción de Ataco caldera formed during the late Pleistocene following the eruption of about 70 km³ of pyroclastic flows and airfall tephra. Flat-topped Laguna Verde at the center of the photo and Las Ninfas at the right are post-caldera cones. Cerro Cuyanausul (left) was constructed prior to caldera formation and lies to the east of the caldera.

Photo by Pat Dobson, 1999 (Lawrence Berkeley National Laboratory).

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

Keywords: stratovolcano

Apaneca Range