Oshika, Nagano

The fault line runs through the village. Not as metaphor — the Median Tectonic Line, one of Japan's most significant geological boundaries, cuts directly beneath Oshika-mura, and the Chuo Kozo-sen Hakubutsukan stands here as the only museum in the country dedicated entirely to it. Rock samples and disaster records share shelf space. The Kozenji River moves west through a valley pressed between the Akaishi Mountains and the Ina highlands, and the road that follows it — National Route 152, once the Ina-Kaido — narrows considerably before reaching the village proper.

What persists here alongside the geology is Oshika Kabuki, performed twice a year in spring and autumn, a tradition carried by villagers for roughly three centuries without interruption. It is not a performance staged for outsiders, though outsiders are welcome. The Michi-no-Eki Kabuki-no-Sato Oshika sells local produce and Kamikura zakkoku — grains grown in the high fields — and the restaurant there gives some sense of what the surrounding land actually yields. Fukutokuji, a temple of Tendai origin with a main hall designated an important cultural property, sits quietly in the village, its structure dating to the Muromachi period.

The mountains above — Arakawa-dake, Kogouchi-dake among them — belong to the Southern Alps, and the ridge trails reach elevations where the air is thin and the passes are snowbound well into the calendar. The village has absorbed floods and landslides, including the Sanroku Disaster of 1961, and continues to function as a working mountain community rather than a preserved exhibit of one.