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Time-lapse sequence of lava lake activity at Halema‘uma‘u

This video, at 50x speed to illustrate the motion of the lava lake surface, shows typical lava lake activity within Halema‘uma‘u Crater. Lava upwells in the northern portion of the lake (left side of image), with most of the lake surface flowing towards the south (right side). Spattering is active within a small grotto at the southeast margin of the lake.