The Kikai caldera erupted violently in the southern Kyushu region at the end of the earlier Jomon period; the eruption caused the catastrophic damage to the area which was thought to be virtually annihilated.
九州南部は縄文早期末に喜界カルデラの大噴火があった為、ほぼ全滅と考えられる壊滅的な被害を受けた。