Japan · Nagano · Kita-Azumi County · Matsukawa · Commercial · onsen

Natural Radon Baro Tengu

Matsukawa, Nagano Prefecture 399-8601, Japan

36.4118° N · 137.8456° E

Amenities

Wheelchair accessible entranceWheelchair accessible parking lotFree-flowing onsenOnsen water directly flows from the sourceNatural onsenOpen-air bathRest areaRestaurantBedrock bathDay-use private bathLie-down bath

What visitors say top 5 of 8 reviews

hi f2 weeks ago

★★★★☆

The interior was smaller than the building gave from the outside. Perhaps because of that, it felt quite crowded even on a weekday. However, it was more comfortable than the extremely chaotic and cheap …

777 kiriya5 days ago

★★★☆☆

I wanted to use the morning bath, but it didn't open until 10am, so I couldn't go. Since there are no other hot springs around, I wish it opened earlier.

シュウちゃん16 hours ago

★★★★☆

The 25-degree hot spring water feels so good ✌️ If you alternate between this and the other baths, you can stay there forever 😊 …

keijirou asazawa3 weeks ago

★★★★★

The open-air bath, the water temperature, and the jet bath strength were all perfect. I'll definitely come again! ^_^

high Bridge To realizea month ago

★★★☆☆

First visit on March 29, 2026 I was curious about the radon hot spring, so I went to check it out. …

Showing the longest 5 of 8 visitor reviews. Reviews are displayed under fair use for editorial commentary; full text and authorship credit belong to the original reviewers.

Gear up

Make a day of it — a quick-dry towel, dry bag, and post-soak layers take almost no pack space.

Shop outdoor gear at Traverseon →

Affiliate link — SoakNation may earn a commission at no cost to you.How we make money