Tenmei eruption
1783 CE.
Shown on the map at 36.406°, 138.523°.
The Tenmei eruption (Japanese: 天明大噴火, Tenmei daifunka) was a large eruption of Mount Asama that occurred in 1783 (Tenmei 3). This eruption was one of the causes of the Tenmei famine. It is estimated that about 1,500–1,624 people were killed in the eruption. The event is known in Japanese as The Burning of Asama in Tenmei (天明の浅間焼け, Tenmei no Asamayake).
Text from the Wikipedia article Tenmei eruption, licensed CC BY-SA 4.0.