Typical lava lake activity in Halema‘uma‘u

Kīlauea's summit lava lake in Halema‘uma‘u is about 255 m (~840 ft) long (left to right in the image) and 195 m (~640 ft) wide. From this perspective, magma rises into the lake near its north edge (upper left) and circulates to the south, where it sinks all along the south margin of the lake. The rim of Halema‘uma‘u is at the right edge of the photo, and the closed visitor overlook is hidden beneath the fume at upper right.