Minamiaiki, Nagano

The village bus from Koumi Station follows the Minamiaiki River upstream, and the valley narrows almost immediately. Ten hamlets thread along the riverbank, each one small enough to walk through in minutes, separated by stretches of forest that cover the steep slopes in every direction. This is Minamiaiki-mura, a mountain village in Minamisaku District where the ratio of woodland to open land tips heavily toward the trees.

At the head of the valley, the Minamiaiki Dam sits at a high elevation, its crest offering a clear view of the Yatsugatake range. The dam is not merely a landmark — it anchors the village's economic life through pumped-storage hydroelectric generation, a modern infrastructure quietly embedded in terrain that otherwise changes slowly. The contrast is easy to miss if you move through quickly: the hum of an invisible industrial scale beneath the sound of the river.

Taki-mi-no-yu, the village hot spring facility that opened in 2001, sits near a waterfall, and the name itself — "the bath with a view of the falls" — describes the experience plainly. Nearby, the Minzoku Shiryōkan holds the material evidence of how people lived here before the dam era. For those who walk rather than drive, Gozasan, a peak on the Nihon Nihyaku-meisan list, offers three separate approach routes, with rhododendrons massing into bloom each June along the upper slopes.