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Eastern spatter cone in filled West Gap Pit, with rim of Pu`u `O`o crater behind. Lava flow is fed mainly from upwelling at base of cone, but some lava and spatter comes from hole in side of cone. Cone is about 6 m high.
Weakly active western spatter cone, with flow mainly fed from eastern cone rushing by. Festooned pahoehoe in foreground is warm and represents an earlier stage of the flow. Cone is about 7 m high.