Pu'u 'O'o eruption of Kilauea Volcano, Hawaii. This is number 5 of series of 100 photos and captions provided on a CDROM (DDS-80) by the U. S. Geological Survey's Hawaiian Volcano Observatory.

 Pu'u O'o eruption of Kilauea Volcano, Hawaii. Lava boulder large enough to fill the back of a 
 pickup truck rolls off the top of an 'a'a flow in Royal Gardens subdivision.  Pu'u 'O'o was now 
 the primary vent (photo by J.D. Griggs, 6/16/83, JG2236).