Photo: Totti · CC BY-SA 4.0 · Wikimedia Commons

Kutsuno Onsen

Nagano · 沓野温泉

Kutsuno Onsen is a hot spring town in Nagano, Japan. The water leaves the ground at 75°C, hot. Officially the water is classed as simple spring, chloride spring, sulfate spring and sulfur spring. 5 inns take visitors here.

Simple springChloride springSulfate springSulfur spring

The water here

Simple spring 単純温泉

Mild and low in dissolved minerals. Usually clear and gentle on the skin, which is why these baths are often recommended for first-timers.

Chloride spring 塩化物泉

Salty water. The salt leaves a thin film on the skin, so you stay warm well after leaving the bath.

Sulfate spring 硫酸塩泉

Clear water with a faintly bitter taste. Known for holding heat.

Sulfur spring 硫黄泉

The classic rotten-egg smell and milky white water. It can tarnish silver jewellery, so take it off.

The numbers

Water temperature
75°C
Inns
5
Address in Japanese
長野県下高井郡山ノ内町

Figures from the town's Japanese Wikipedia article.

Read more

Japanese Wikipedia

Other towns in Nagano

Bessho OnsenNagano · 別所温泉
Sulfur spring
Hirugami OnsenNagano · 昼神温泉
Sulfur spring
Togura-Kamiyamada OnsenNagano · 戸倉上山田温泉
Sulfur spring
Shirahone OnsenNagano · 白骨温泉
Bicarbonate springSulfur spring
Kakeyu OnsenNagano · 鹿教湯温泉
Simple spring
Yudanaka-Shibu OnsenNagano · 湯田中渋温泉郷
Chloride springSulfate springSulfur spring
Nakabusa OnsenNagano · 中房温泉
Sulfur spring
Asama OnsenNagano · 浅間温泉
Simple spring

Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.