Vigorous boiling of the lava surface in Kīlauea's summit vent

Detailed Description
Photo of vigorous boiling of the lava surface in Kīlauea's summit vent following vent wall and rim collapses earlier in the day. The rim of the vent on the floor of Halema‘uma‘u is about 150 m (yards) across. The lava surface is about 100 m (yards) below the rim.
Sources/Usage
Public Domain.