Global Volcanism Program | Image GVP-08217
An eroded pyroclastic flow deposit extends to the SE from El Valle caldera. Pyroclastic flows from phreatomagmatic eruptions about 50,000 to 34,000 years ago traveled more than 25 km to the Pacific coast of Panamá and their deposits cover the southern and eastern flanks of the volcano.
Photo by Lee Siebert, 1998 (Smithsonian Institution).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.