Summary

The Kikai-Akahoya volcanic eruption is one of the most destructive in history: Around 5250 BCE, almost 7,300 years ago, off the southwestern coast of Japan, it spewed massive amounts of magma and volcanic material from beneath the seabed in a series of blasts. For the Jomon foraging communities of Japan at that time, it must've been a cataclysmic event of incomprehensible proportions. Scoring 7 out of 8 on the volcanic explosivity index , it's the sort of event that happens once every 500–1,000 years.

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