Japan’s massive volcanic eruption 7,300 years ago caused population collapse in some areas and growth in others

Seven thousand three hundred years ago, a volcano exploded out of the sea floor near southern Japan. The Kikai-Akahoya eruption was one of the largest of the last 11,700 years. It sent powerful earthquakes and huge tsunamis across the islands, then buried the land under meters of ash. Jomon hunter-gatherers lived there at the time. […]

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