Right: Lava cascades plunge 160 feet into Lua Hou Crater, upper part of Mauna Loa's southwest rift zone, during July 1975 eruption. (Photograph by Robin T. Holcomb.) Below: A clockwise-circulating lava lake (nearly 500 feet across) in Pauahi's west pit formed during the same eruption. Bright small spots seen on the lake surface are caused by trees bursting into flame. (Photograph by Robert I. Tilling.) |