Scientists investigating a lava flow from Krafla volcano are silhouetted (lower right) against the glowing margin of the slowly advancing flow. This photo was taken on 5 September 1984, the day after the onset of an eruption from the Leihrnjúkur fissure. Cracks on the surface of the advancing flow reveal the still-molten interior.

Photo by Michael Ryan, 1984 (U.S. Geological Survey).

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

Keywords: lava flow | eruption | lava | field work | volcanologist | volcano monitoring

Krafla