Lava fountaining of the Sierra Negra eruption is viewed from the east caldera rim on the night of October 24, the 3rd day of the eruption. Vigorous lava fountains rise from several locations along the fissure vent, feeding several anastomosing lava flows that poured into the caldera. The scattered glow in the foreground was due to ponded lava covering the caldera's eastern floor.

Photo by Gregg Estes, 2005.

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

Sierra Negra