1741 eruption of Oshima–Ōshima and the Kampo tsunami

The devastating eruption of Oshima–Ōshima began on 18 August 1741 and ended on 1 May the next year. Eleven days into the eruption, the Kampo tsunami (Japanese: 寛保津波, Hepburn: Kampo tsunami) with estimated maximum heights of over 90 m (300 ft) swept across neighboring islands in Japan and the Korean Peninsula.