Kumamoto(熊本)

Mt. Aso (Mt. Takadake 1,592 m, Kumamoto) — one of the world's largest active volcano calderas and a hyakumeizan. Kyushu Sanko Bus Aso Tozan Line (revised May 11, 2026, fully verified) from JR Aso Station to Kusasenri and Aso Mountain Top Terminal. Alert level 1 since July 2025, but Nakadake crater area remains restricted — confirm before visiting.