Global Volcanism Program | Image GVP-09869
An aerial view in 1985 looks from Kilauea caldera in the foreground down the East Rift Zone to the steaming Pu’u ‘O’o vent in the center background. The Hawaiian Volcano Observatory lies at the lower left on the western rim of Kilauea's 5-km-wide summit caldera, which is cut by the inner Halemaumau crater (lower right). Lava flows cover the floor of the summit caldera and can be seen extending downslope from multiple vents along the rift zone, including the dark-colored most recent flows erupted beginning in 1983 from the Kupaianaha vent.
Photo by Jim Griggs, 1985 (U.S. Geological Survey).