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Kuzu Onsen

Kuzu, Tochigi, Japan
Kuzu Onsen
Location
Kuzu, Tochigi, Japan
Water type
thermal
Temperature
40 °C
pH
7.3

Water profile

Thermicity
Sedative
40 °C
LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation
Balancing
LowHigh

Rich in trace elements — gentle on the skin.

Buoyancy
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

BicarbonatesCalcium

Kuzu Onsen lies in the scenic Takase Valley gorge of Omachi City, Nagano Prefecture, where simple alkaline thermal waters emerge within one of the Japanese Alps' most dramatic river gorge landscapes—a deep canyon through volcanic and metamorphic rock carved by the high-gradient Takase River above the reservoir formed by the massive Takase Dam in the Northern Alps. The spring serves as a base and trailhead for climbers approaching Mt. Eboshi (Ubuyama, 烏帽子岳) in the North Alps—a demanding alpine objective whose summit rewards with panoramic views across the Cathedral range of the Northern Japanese Alps. Simple waters and high alpine surroundings create the combination that defines Japan's best mountain onsen experiences: physical exhaustion from demanding terrain answered by the restorative warmth of volcanic mineral waters in a deep valley setting.

Insider tip — Kuzu Onsen sits in the Tochigi highlands of central Honshu, a quiet retreat favored by locals seeking relief from urban stress. The simple thermal waters are gentle on the skin and ideal for long soaks in traditional wooden tubs. Visit in autumn when the surrounding maple forests blaze with color. The atmosphere is unhurried and authentically Japanese.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 40 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).