Global Volcanism Program | Image GVP-00946
A hot lahar sweeps down a channel on the SW flank of Mayon in the Philippines on 14 September 1984, five days after the onset of an eruption. The water temperature of this lahar was about 80°C. Note the large block in the center of the channel that is being transported by the lahar.
Photo by Ernesto Corpuz, 1984 (Philippines Institute of Volcanology and Seismology).