Lava Lake at Halema'uma'u Crater

The lava lake deep within the vent cavity at Halema'uma'u crater remains active, with ongoing degassing and circulation of lava. This Quicktime movie shows the view in the vent today with a thermal camera, and the video is set at x4 speed to better show the slowly moving lava surface. Today, the lava surface was moving at a rate of about 18 meters per minute (or about 0.7 miles per hour).