SHIMABARA, Nagasaki Prefecture--Locals gathered here on June 3 to commemorate the massive eruption of Mount Unzen’s Fugendake ... mix of superhot gases and volcanic matter.

Kanichi Kanegae was the mayor of Shimabara in Nagasaki Prefecture while volcanic eruptions continued at nearby Fugendake, the main peak of Mount Unzen, in 1991. Readily recognizable for his long ...