An ash plume rises above the crater lake of Poás volcano in 1915. Intermittent eruptions producing ashfall during 8 October 1914 to 15 May 1915. The 10 April eruption was seen from San José, and the last of a series of eruptions during 15-19 April that produced ashfall across great distances.

Photo by R. Fernandez Peralta, 1915 (courtesy of Jorge Barquero, Universidad Nacional Costa Rica).

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

Keywords: crater lake | crater | explosive eruption | cock’s-tail plume | ash | eruption

Poás