Kikai-Akahoya Eruption

Like the Aira-Tanzawa Eruption, the Kikai-Akahoya Eruption happened in southern Kyushu. It is dated to 7300[1][2] to 6300 years ago.[3] Southern Kyushu has long been plagued by devastating volcanic eruptions--during the Jomon Period, such eruptions caused migrations of peoples out of southern Kyushu and into northern Kyushu and Honshu, to escape the overwhelmingly inhospitable conditions.[4]

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Kikai-Akahoya Eruption