Yunishigawa Onsen

The story Yunishigawa tells about itself is that survivors of the Taira clan, beaten at Dan-no-ura in 1185, fled into these mountains, found hot water rising in the riverbed and stayed. Whether or not you take the genealogy literally, the village has kept the customs the legend implies: households here traditionally avoided flying carp streamers, keeping chickens or planting the kind of crops that would give away a settlement from a distance. The Heike no Sato museum village sets out the whole account.

It is a deep, narrow valley a long way up from the Kinugawa gorge and it feels like it. The winter event is what most Japanese visitors come for: from late January into early March, thousands of miniature snow huts are built along the Sawaguchi riverbank and lit with candles after dark, alongside full-size kamakura large enough to sit and grill food inside. Snow here is heavy and reliable, and the valley at night under candlelight is one of the more genuinely striking winter scenes in the Kanto region.

The Taira, or Heike, were the losing side in the Genpei War, and origin legends like Yunishigawa's are not unique to this valley — pockets of supposed Taira refugees are claimed by remote villages across Japan, from Shikoku to Kyushu, each with its own version of the same basic story: a defeated clan scattering into the mountains and hiding for generations. What makes Yunishigawa's version durable is that the practical customs attached to it (no carp streamers at Boys' Day, no crowing roosters, houses built to be less visible from the valley floor) gave the legend something concrete to hang onto beyond oral tradition, turning a folk story into a lived set of habits that outsiders could actually observe. Whether the genealogy is literally true or a later story layered onto genuinely isolated mountain settlements, the isolation itself is not in question — this is still one of the harder-to-reach onsen villages in the Kanto region, reached by a single rail line and a mountain road that both close or slow significantly under heavy snow.