Mount Kinbo, Extinct stratovolcano in Nishi-ku, Kumamoto, Japan.

Mount Kinbō is a caldera-style volcano whose central cone, Ichi-no-take, reaches 665.2 metres; the wider massif also takes in Nino-take (685 m), Sanno-take (681 m) and Arao-yama (445 m) on the rim. Its summit is a lava dome, the last to form, and the slopes are mostly broadleaf forest, with mandarin orchards and a mini-monorail on the western side facing the Ariake Sea. Two thin masts stand on the summit ridge.

Mount Kinbō is a caldera volcano older than Mount Aso, built up over more than a million years. Activity peaked 560,000 to 500,000 years ago, when eruptions along the broken rim of the outer crater formed Nino-dake and San-no-dake. A caldera lake later filled the western area, and the last eruption, 200,000 to 150,000 years ago, produced the lava dome of Ichi-no-dake.

Mount Kinbō holds significant cultural importance as the location where legendary swordsman Miyamoto Musashi composed portions of his famous treatise The Book of Five Rings while residing in the nearby Reigando Cave.

Visitors can access Mount Kinbō via public transportation from JR Kumamoto Station by taking a tram to Honmyoji-denteimae followed by a bus to the trailhead, with parking facilities and hiking trails available for day trips.

The summit of Ichinodake holds TV and FM radio transmitters whose signals reach the Ariake Sea coast, and in the 1990s they served as temporary relays for Shimabara while the Unzen eruptions closed roads to Mount Mayuyama. The mountain is a caldera volcano, not a stratovolcano, and no longer active.