Global Volcanism Program | Image GVP-07254
Scoria from the 1904 eruption of Santa Ana form the darker deposits across the summit crater rim. The first of two 20th-century eruptions from Santa Ana began on 12 January, lasted for about two weeks, and included phreatomagmatic explosions.
Photo by Carlos Pullinger, 1996 (Servicio Nacional de Estudios Territoriales, El Salvador).
This image is made available under the Creative Commons BY-NC 4.0 license terms.