鬼界カルデラの破局噴火からの被害を免れることができた東北地方の縄文日本人は何千年もの間日本で平和に繁栄し続けていました。 Those Jomon Japanese people who had lived in the northeastern part of Japan could avoid the damage from Kikai Caldera’s Ultra-Plinian eruptions, so they lived peacefully and prospered in Japan for another thousands of years. もっとも、紀元前2,300年…