Oft times you’ll spot a monolith in Kumamoto City and can imagine the thud it made when Aso spit it out - must have been quite an eruption for ejecta to travel so far. Probably the thudiest. And it’s still capable of this. Makes living in Kumamoto that much more thrilling. - William
https://www.jstage.jst.go.jp/article/geosoc1893/36/433/36_433_17/_article/-char/ja/