Global Volcanism Program | Image GVP-08217
A dissected pyroclastic-flow apron 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 blanket the southern and eastern flanks of the volcano. Tertiary volcanic centers at the right form dissected peaks beyond the eastern flanks of the caldera.
Photo by Lee Siebert, 1998 (Smithsonian Institution).