Global Volcanism Program | Image GVP-03919
A large ash plume towers above Fuego in October 1974 as pyroclastic flows travel down the eastern flank (left). This was the largest Fuego eruption since 1932 at the time, and produced pyroclastic flows that traveled up to 7 km down the E, SE, SW, and W flanks. Prevailing winds distributed ashfall primarily to the SW, in the opposite direction from this view.
Photo by William Buell, 1974.
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.