Ikeda-ko is a caldera in the Ibusuki Volcanic Field. Part of the caldera is filled with water to make a crater lake. The only Holocene eruption of Ikeda-ko was 2690 BC. The eruption was very large (VEI=5), explosive, and generated pyroclastic flows. There were maar-forming eruptions at Ibusuki in 5050 BC and 1450 BC. All photographs courtesy of and copyrighted by Mike Lyvers.
Ibusuki, where the black sands are hot and many people (like the young woman shown here) enjoy being buried in the hot steaming sand for health.
Kaimon is a stratovolcano in the Ibusuki Volcanic Field. Kaimon has had at least 23 eruptions since 2010 BC. Most of these eruptions were moderate-large to large (VEI=3-4). Most of the eruptions were explosive. Only four of the eruptions produced lava flows. Eruptions in 874 and 885 caused damage. This view is from across the entrance to Kagoshima Bay. Kaimon is known as the "Mt. Fuji of Kyushu".
The next three photos show various views of Kaimon's symmetrical cone.
Simkin, T., and Siebert, L., 1994, Volcanoes of the World: Geoscience Press, Tucson, Arizona, 349 p.
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