In three days, it will likely be 32 years because the nice pyroclastic move of Mt. Unzen and Mt. Fugen in Nagasaki Prefecture, which killed 43 individuals. In Shimabara City, bereaved households and residents mourned the victims by laying flowers on the memorial monument.
Source
32 years after the Unzen-Fugen pyroclastic move, bereaved households and different victims mourn Nagasaki Shimabara | NHK
