Public bathhouse · Open
Bijo-zukuri-no-yu (town open-air bath)
- Day-use bathing
- Yes
- Fee
- ¥400checked 2026-10-09
- Hours
- 金土日 10:00–17:30 / 月 11:00–17:00checked 2026-10-09
Photo information
Save to passport
Official classification
Spring type (therapeutic classes)
Official spring-type name (as recorded)Sulfur spring (per Wikipedia; official spring-type listing not found)
- Source temperature
- 43.7°C
- pH
- Unconfirmed
- Flow rate
- 540 L/min
- Radon
- Unconfirmed
Appearance & feel
Water colour · Feel
Silky / slippery
Colour and feel are listed only where a source states them. They vary by day and by bath.
What makes it special
Forty minutes from Senzu Station on one of six buses a day. In a gorge at the gateway to the Southern Alps, soak in a sulfur spring called 'the beauty-making bath' and cross a suspension bridge that takes ten people at a time.
Why?
The Oigawa Railway's Sumatakyo bus runs from Senzu Station to Sumatakyo Onsen in about 40 minutes for 900 yen, six services a day. Wikipedia gives a sulfur spring at 43.7 °C and 540 litres a minute, and the town-run open-air bath is named 'Bijo-zukuri-no-yu'. The Kawanehon tourism association says the Dream Bridge takes only ten people at a time, one way.[5][2][6]
Facilities in this area
Facilities come from the register (Wikipedia, OpenStreetMap, official sites). Those marked "natural spring unconfirmed" are listed on the basis of their name only.
Ryokan (inn) · Open
Suikoen
- Day-use bathing
- Yes
- Fee
- Unconfirmedno check date
- Hours
- Unconfirmedchecked 2026-10-09
Foot bath · Open
Hand bath in the village
- Day-use bathing
- Yes
- Fee
- Unconfirmedno check date
- Hours
- Unconfirmedchecked 2026-10-09
Getting there
Reachable by public transport
From Kanaya on the Oigawa Railway, train to Ieyama (about 35 min), Kawanehon town bus to Senzu Station (about 45 min), then the Oigawa Railway Sumatakyo bus (about 40 min, 900 yen). Six buses each way daily. By car, the end of Prefectural Route 77.
- Getting there
- Senzu Station · 40
- Getting there
- Six a day from Senzu (5:50–17:20) and six back (6:35–18:00); the return takes about 65 minutes
- Through the year
- The main railway is still cut between Kawaneonsen-Sasamado and Senzu since the 2022 typhoon (change to the town bus at Ieyama). Until 11 Dec 2026 most buses terminate at 'Sumatakyo Onsen Iriguchi'. Expect up to two hours' wait at the bridge in leaf season
- Checked
- 2026-10-09
About the water
Per Wikipedia the water is a sulfur spring at 43.7 °C, flowing at 540 litres a minute. Kawanehon town says the open-air bath leaves skin 'slick and smooth', which is where the name 'beauty-making bath' comes from. Sulfur water is commonly said to soften the skin's surface; we report that only as the local description. The source was developed by drilling in 1962, after an earlier spring in a nearby hamlet was drowned by dam construction. pH and analysis sheets could not be read on official pages.
| Source | Source temperature | pH | Radon | Checked |
|---|---|---|---|---|
| Sumatakyo Onsen (Wikipedia figures) | 43.7 | Unconfirmed | Unconfirmed | no check date |
Three things not to miss
Bijo-zukuri-no-yu, the town's open-air bath
In the village (368-3 Senzu, Kawanehon) The town-run open-air bath: 400 yen adults, 200 children. Fri–Sun 10:00–17:30 (last entry 17:00), Mon 11:00–17:00 (last entry 16:30), closed Tue–Thu, with shorter hours in winter and off-season. Run by the local bathhouse cooperative.
The town describes the water as leaving skin 'slick and smooth'. It is the one public bath where you can test the slippery sulfur water without staying at an inn.[3][4][7]
Photo information
Yume-no-tsuribashi, the Dream Bridge
On the Sumatakyo Promenade loop, over the Oma dam lake A suspension bridge over an emerald-green lake. Ten people at a time, one direction only. The trail opens 8:00–17:00 and the gate is locked at 17:00; cross the bridge by 16:00. In leaf season (late Oct–Nov) the wait can reach two hours. A conservation contribution of 500 yen is requested.
The loop takes about 90–100 minutes with 304 steep steps along the way. Pray for love at the midpoint of the bridge, they say, and it will be granted.[6][8][9][7]
The bus ride in from Senzu
Senzu Station to Sumatakyo Onsen The Oigawa Railway's Sumatakyo bus: about 40 minutes in, 65 out, 900 yen adults / 450 children, six each way daily (first 5:50, last 17:20). Since the 2022 typhoon the main railway is cut between Kawaneonsen-Sasamado and Senzu, so from Kanaya you ride the train to Ieyama (about 35 min) and the town bus to Senzu (about 45 min).
Getting there by bus is part of the experience. The more changes it takes, the quieter it feels when you arrive.[5][10][9]
The story
A spring drowned, a spring redrilled
Hot water was known here from 1889, but that spring, in a nearby hamlet, was drowned by dam construction. The present spring was drilled in 1962, and a village of eight inns grew up in a logging valley at the gateway to the Southern Alps. A locomotive of the Senzu forest railway is preserved in the village, a reminder of the timber years. In 1968 the Kin Hiro hostage incident made the name known across Japan.[2]
The beauty-making bath
The water is a sulfur spring at 43.7 °C, 540 litres a minute (Wikipedia). Kawanehon town says the open-air bath leaves skin 'slick and smooth', hence the name 'beauty-making bath'. The town bath costs 400 yen and opens only Friday to Monday, closing Tuesday to Thursday. There is also a hand bath in the village, so even day visitors can feel the slipperiness of the water.[2][4][7][11]
Ten at a time
The Dream Bridge hangs over the emerald water of the Oma dam lake and is crossed ten people at a time, one way. The trail opens from 8:00 to 17:00, the gate is locked at 17:00, and walkers are asked to be over the bridge by 16:00. The promenade loop runs via the Angel Tunnel, the bridge, the Ozakizaka viewpoint and the Hiryu Bridge in about 90–100 minutes, with 304 steep steps. In leaf season the wait can reach two hours. A 500 yen conservation contribution is requested.[6][8][9][11]
Arriving by connections
The Oigawa main line has been cut between Kawaneonsen-Sasamado and Senzu since the 2022 typhoon: train from Kanaya to Ieyama, then the town bus to Senzu, about 45 minutes. From Senzu the Oigawa Railway bus takes about 40 minutes to Sumatakyo Onsen, 900 yen, six a day; the return down the mountain road takes about 65 minutes. The association's day-trip model leaves Kanaya at 11:04, reaches the village at 13:40, and leaves at 16:20 to be back in Kanaya by 19:24.[10][5][9]
Going solo
Solo stay unconfirmedUnconfirmed
Weekend / peak restrictionsUnconfirmed
Where to eat dinnerA few eateries in the village (Suikoen serves meals); details not confirmed
Private bathUnconfirmed
checked 2026-10-09
Through the year
Recommended months
JanFebMarAprMayJunJulAugSepOctNovDec
Months open
JanFebMarAprMayJunJulAugSepOctNovDec
"Recommended" and "open" are recorded separately. Check the season for seasonal springs.
Oct · Nov — Leaf season (late Oct–Nov) brings waits of up to two hours at the Dream Bridge
Dec · Jan · Feb · Mar — The town bath shortens its hours in winter; the trail gate locks at 17:00
Apr · May — In the 2022 reopening notice the bath ran daily over Golden Week (29 Apr–8 May)
Food, culture & experiences
Sumatakyo Promenade and the Dream Bridge
A 90–100 minute loop: Angel Tunnel, Dream Bridge, Ozakizaka viewpoint, Hiryu Bridge. 8:00–17:00, 500 yen contribution[9][8][6]
From the gate at the edge of the villageSannami Bridge and the Green Shower Road
A 96 m, 11 m-high suspension bridge on an 80-minute loop; you can go down to the Sumata River[4]
On foot from the villageMt Tomori hike and the 'rock that never falls'
A boulder of tengu legend beyond Tomori Shrine; about 60 minutes to the summit[4]
From the villageOigawa Railway Ikawa Line (Abt rack railway)
Trolley trains from Senzu to Ikawa, running normally[10]
From Senzu StationEditors' guide
Take the 13:00 bus from Senzu, arriving 13:40. Walk the promenade loop, cross the Dream Bridge before 16:00, return via the Ozakizaka viewpoint and Hiryu Bridge, and fit in the town bath (Fri–Mon only) or the hand bath before the 16:20 bus. Stay over and you get the bridge to yourself next morning.
The "editors' guide" above is written by the editors from sources; it is not a visitor's opinion.
Photo gallery
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Overview
寸又峡温泉（すまたきょうおんせん）は、静岡県榛原郡川根本町（旧本川根町）にある温泉。
This overview is based on the lead section of the Japanese Wikipedia article "寸又峡温泉" (CC BY-SA 4.0). View original page
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Unconfirmed & notes
- Spring type, temperature and flow are from Wikipedia; the official site lists no spring data, fee or hours, so the fee comes from the tourism association and hours from the town page
- Free-flow/disinfection notices, tattoo policy and actual winter hours of the town bath not confirmed
- Solo-stay and day-bathing rates at inns not confirmed; Suikoen's spring data and fees not readable
- The bridge's 90 m length and 8 m height appear in association search text but not on the page read, so they are omitted
Sources
- 川根本町観光協会 公式サイト(奥大井の旅なび)川根本町まちづくり観光協会 · 2026-10-09
- 寸又峡温泉 - WikipediaWikipedia · 2026-10-09
- 温泉施設一覧(川根本町公式)川根本町 · 2026-10-09
- 寸又峡 夢のつり橋だけ「じゃない」スポットのご紹介(川根本町公式)川根本町 · 2026-10-09
- 大井川鐵道 バス時刻表・運賃(寸又峡線)大井川鐵道 · 2026-10-09
- 夢のつり橋(川根本町観光協会 遊ぶ・体験)川根本町まちづくり観光協会 · 2026-10-09
- 宿泊・温泉一覧(川根本町観光協会)川根本町まちづくり観光協会 · 2026-10-09
- 『夢のつり橋』への遊歩道は8時から17時まで通行可能です(川根本町観光協会)川根本町まちづくり観光協会 · 2026-10-09
- 夢のつり橋 日帰りコース【公共交通機関利用・日帰り】川根本町まちづくり観光協会 · 2026-10-09
- 大井川鐵道 公式サイト(運行情報)大井川鐵道 · 2026-10-09
- 夢のつり橋 寸又峡温泉 公式サイト(寸又峡美女づくりの湯観光事業協同組合)寸又峡美女づくりの湯観光事業協同組合 · 2026-10-09
- 翠紅苑 公式サイト翠紅苑 · 2026-10-09
- 【寸又峡】町営露天風呂「美女づくりの湯」営業再開のお知らせ(2022年)川根本町まちづくり観光協会 · 2026-10-09
Register sources
- 寸又峡温泉 - Wikipedia(日本語版)Wikipedia · CC BY-SA 4.0 · 2026-10-09
- Wikidata Q11457663Wikidata · CC0 · 2026-10-09
Data status
Name & locationPublishedCoordinatesPublishedSpring typePublishedPhotosPublishedFacilitiesPublishedVisiting info (dated)PublishedEditorial articlePublished
Updated 2026-10-09
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