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Halema‘uma‘u, shown here, is about a kilometer (0.6 miles) across a...

Detailed Description

Halema‘uma‘u Crater, shown here, is about a kilometer (0.6 miles) across and contains a lava lake in a smaller crater, informally called the Overlook crater, at its southeast edge. The lava lake is about 250 m (~820 ft) long and 180 m (~590 ft) wide and, when this photo was taken, the surface of the lake was about 15 m (~50 ft) below the Overlook crater rim. The view is to the southwest, looking out into the Ka‘ū Desert in the distance. The western slope of Mauna Loa forms the skyline to the right.