Ikeda Caldera
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Ikeda Caldera is a volcanic caldera filled now with Lake Ikeda and associated with the older Ata Caldera on the Satsuma Peninsula.
Lake Ikeda seen from the southeast
Lake Ikeda seen from NNW
Lake Ikeda with Kaimon Volcano
Lake Unagi
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Lake Unagi is a Japanese maar lake associated with an eruptive vent line extending towards the sea from the parent volcano Ikeda Caldera which contains Lake Ikeda.
Ikeda Caldera
…the pumiceous Yamagawa base surge (from Yamagawa maar, 0.04 km3 (0.0096 cu mi)) in a line of eruptions that also created Ikezoko maar, Unagi maar (now Lake Unagi) and Narikawa maar. A central lava dome was formed within the caldera during the late stage of these eruptions. About 2,800 years ago on part of the…
View from directly above Lake Unagi