Global Volcanism Program | Image GVP-08215
The unassuming profile of the broad irregular ridge on the horizon rising to the NE above the Pacific coastal plain is El Valle volcano, one of the youngest in Panama. El Valle de Antón caldera truncates the volcanic complex and is drained by the Río Antón through a breach in the caldera rim at left center. Post-caldera lava domes can be seen on the center horizon. Late-Pleistocene plinian eruptions from El Valle have produced pyroclastic flows that reached the coast. Tertiary volcanic centers surround the caldera complex.
Photo by Lee Siebert, 1998 (Smithsonian Institution).