Sanbondaki Falls

Sanbondaki, literally the "Three Waterfalls," is one of the signature nature walks of the Norikura Highlands, a forest loop that links three quite different cascades within a short stretch of mountain stream. Unusually, each of the three has its own character — one broad and gentle, one a slender high drop, one a rushing chute — so a single easy hike delivers a satisfying variety, all framed by the birch and maple woodland that makes Norikura so beautiful in autumn.

The falls sit on the highland's network of clear, snowmelt-fed streams at around 1,400 to 1,500 metres. The volcanic geology of Mount Norikura, with its layered lava flows, has created the sequence of ledges and drops that give the three waterfalls their distinct forms. Because the water originates as snowmelt and spring flow high on the volcano, it runs cold and clear throughout the season, powerful after summer rains and softer in autumn.

The walk is the point here. A signed trail loops through the forest to reach all three falls, with viewing points and small bridges along the way; the full circuit takes around an hour and involves some gentle ups and downs and a few uneven, sometimes slippery sections, so it earns a "moderate" rating and calls for proper shoes. The lower fall is reached quickly, but visitors who turn back too soon miss the upper cascades, which are arguably the most rewarding, so it is worth completing the loop.

Sanbondaki pairs naturally with the nearby Zengoro Falls and the highland's ponds and marshes for a half-day of walking. The whole Norikura Kogen plateau is designed for gentle exploration, with interlinked trails, a nature-information centre and seasonal wildflowers, and the three waterfalls are one of its most popular objectives. The relative effort of the loop keeps crowds thinner than at roadside sights, so the forest often feels genuinely wild.

The experience is one of cool, green immersion: the sound of moving water is constant, the canopy filters the light, and the changing character of each fall keeps the walk engaging from start to finish. In early October the maples turn fiery and the larches gold, and the contrast of white water against autumn colour makes this a favourite of hikers and photographers alike. Early summer, with its fresh foliage and strong flow, is a close second.

As with all of Norikura, the highlands are snowbound in winter and the season runs roughly from late April to early November. Access is via Shin-Shimashima and the Norikura bus from Matsumoto. Bring sturdy footwear, allow a full hour for the loop, and Sanbondaki rewards you with a varied, uncrowded waterfall walk in one of the loveliest corners of the Northern Japan Alps.