Global Volcanism Program | Image GVP-07068
Geologists stand on the margin of a pyroclastic flow deposit from an eruption of Arenal in 1993. In addition to the devastating pyroclastic flows accompanying the start of the eruption in July 1968, more frequent pyroclastic flows occurred in 1975, 1987, 1993, and 1998.
Photo by Guillermo Alvarado, 1993 (Instituto Costarricense de Electricidad).
This image is made available under the Creative Commons BY-NC 4.0 license terms.