Fodor's Expert Review Yari Onsen

The trail from Sarukura to Yarigatake—a hike of four hours—leads to the area's highest outdoor hot spring, Yari Onsen. It's part of a lodge that also has camping grounds (with gear rentals), but you can payto use the onsen. The lodge is open from mid-July to the end of September. Sarukura is a 40-minute bus ride from Hakuba Station. Crampons can be rented in Hakuba Village.