Pu'u 'O'o eruption of Kilauea Volcano, Hawaii. This is number 22 of series of 100 photos and captions provided on a CDROM (DDS-80) by the U. S. Geological Survey's Hawaiian Volcano Observatory.

Kilauea Volcano, Hawai'i.  Aerial view from the northeast of Pu'u 'O'o
fountain and 'a'a flow during episode 21.  The broad, fanshaped
front of the flow in the foreground is typical of 'a'a flows on low-angle slopes (photo by J.D. Griggs, 6/30/84, JG4472).