See King's Bowl & Great Rift, Craters of the Moon National Monument, Idaho

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King's Bowl is a phreatic explosion pit 280 feet (90 m) long, 100 feet (30 m) wide, and 100 feet (30 m) deep, caused by lava meeting groundwater and producing a steam explosion 2,200 years ago. Kings Bowl Lava Field erupted during a single fissure eruption on the southern part of the Great Rift about 2,250 years ago. This eruption probably lasted only a few hours to a few days. The field preserves explosion pits, lava lakes, squeeze-ups, basalt mounds, and an ash blanket. The King's Bowl area is an excellent place to view the Great Rift but entry into the areas caves is restricted due to extreme safety hazards within the caves.

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