The vent is circular in shape and about 100 feet (30 m) in diameter. Kilauea Iki trail passes the lip of the vent. Please heed the posted warning signs. Rocks in this area are very unstable. This aerial photo shows the top of Puu Puai and vent for the 1959 eruption. Kilauea Iki Trail is just below the bottom of the photo. Photo courtesy U.S. Geological Survey.
At the end of each eruptive phase lava drained back into the Kilauea Iki vent. Photography courtesy of the U.S. Geological Survey.
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Kilauea Iki Trail |  |
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