Overlook crater, comparing the visual photograph with a thermal ima...

Another view of the Overlook crater, comparing the visual photograph with a thermal image taken from a similar position. The thermal camera can "see" through thick fume, providing an unobstructed view of the crater and lava lake. The thermal image clearly shows the inner ledge along the south wall of the Overlook crater, with the active lake surface well below the level of the ledge.