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Kuronagi

黒薙温泉露天風呂くろなぎおんせんろてんぶろ

Remote gorge ryokan reached by trolley train and a mountain walk

Public Bathhouse
Chubu·Toyama

Day Use

Yes
09:00–15:15
¥1,100

Adults 1,100 yen, children 500 yen, preschoolers free. Cash only.

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

Bathing Arrangements

Private BathNo

A private bath you can reserve for yourself or your group

Mixed BathingYes

Shared bathing area for all genders

The large outdoor bath 'Izumi' is mixed-sex (konyoku); swimwear and bath towels permitted. A women's-only outdoor bath 'Tennyo no Yu' also exists.

Policies & Services

TattooYes

Allows entry with visible tattoos

DiningYes

A restaurant or dining room open to visitors, not only meals for overnight guests

WashingYes

Shower, wash stations, soap and shampoo provided

Shampoo, body soap and dryer in the indoor bath; no washing facilities in the outdoor baths.

TowelsYes

Towels to rent or borrow at the desk

Rest AreaYes

Relaxation space for after bathing

ParkingNo

On-site or nearby parking available

Views

River
Forest
Mountains

About

The main outdoor bath is konyoku (混浴, mixed bathing), with a separate women's-only rotenburo alongside, both sitting above the Kurobe river in the gorge. The water comes out clear and leaves the skin noticeably smooth. The wooden ryokan building dates from the Meiji era and has 15 tatami rooms, no televisions, and no road access. You get here by the Kurobekyokoku Torokko Densha (黒部峡谷トロッコ電車), a narrow-gauge open-air train from Unazuki, then walk 20 minutes up a signed mountain path. The spring was in use as a secret bath from around 1645, when the Kaga domain (加賀藩) banned ordinary people from bathing here, until the prohibition was finally lifted in 1868.

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SH
Shirokuma
4 months ago

I would throw it. But I have there... Only a photo from there. 🤗 The view from there is very cool, overlooking a mountain river. The bath itself, as they say, has hardly been rebuilt and has a very natural look. The water is clear, alkaline, and the temperature is pleasant, not too hot, although in summer it can get really hot from the sun. Getting there is not easy, and after Toroko, you still have to walk 40 minutes along a mountain road, but the road itself is generally comfortable. The views are simply magnificent.

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Last updated October 6, 2026