Sloping lane lined with wooden buildings
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Kyushu & Okinawa · Onsen area

Unagi Onsen

うなぎおんせん · 鰻温泉

Kagoshima · 指宿市

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Official classification

Spring type (therapeutic classes)

Official spring-type name (as recorded)Simple sulfur spring (as listed for the Unagi public bath and Unagi Onsen Matsumae)

Source temperature
88.8–97°C
pH
Unconfirmed
Flow rate
Unconfirmed
Radon
Unconfirmed

Appearance & feel

Water colour · Feel

Unconfirmed

Colour and feel are listed only where a source states them. They vary by day and by bath.

What makes it special

In a tiny village on the shore of a crater lake, the steam ovens called sume in people's front yards are still used to cook everyday meals.
Why?

Kagoshima Prefecture's tourism site explains that sume, natural ovens powered by hot spring steam, stand in the front yards of homes throughout the Unagi Onsen village and are still part of daily life.[1]

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.

Day-use bathing
Yes
Fee
¥300checked 2026-10-09
Hours
8:00–19:00 (Jun–Sep: 8:00–13:00, 15:00–19:00)checked 2026-10-09
Baths1
TypeGenderSourceBath temperatureFree-flowingAdded waterHeatedRecirculatedDisinfected
Indoor bathSeparateSimple sulfur springUnconfirmedYes[2]Unconfirmed[2]Unconfirmed[2]Unconfirmed[2]Unconfirmed[2]
Day-use bath · Open

Unagi Onsen Matsumae

Day-use bathing
Yes
Fee
¥300checked 2026-10-09
Hours
10:00–20:00 (Jun–Oct: 10:00–13:00, 15:00–20:00)checked 2026-10-09
Baths1
TypeGenderSourceBath temperatureFree-flowingAdded waterHeatedRecirculatedDisinfected
Indoor bathSeparateSimple sulfur spring (fumarole-fed)UnconfirmedYes[6]Unconfirmed[6]Unconfirmed[6]Unconfirmed[6]Unconfirmed[6]

Getting there

Reachable by public transport

From JR Yamakawa Station on the Ibusuki-Makurazaki Line, a taxi takes about 10–15 minutes (around an hour on foot). From JR Ibusuki Station it is about 20 minutes by car. We could not confirm a route bus.

Getting there
Yamakawa Station · 15
Checked
2026-10-09

About the water

Unagi's water is a simple sulfur spring. Steam vents break the surface around the village, so the air smells of sulfur everywhere. Unagi Onsen Matsumae draws its water from a fumarole, 97 °C at the source. The same vents heat the sume ovens, so bath and kitchen share one source of geothermal heat. The public bath lists indications such as skin conditions, neuralgia and convalescence; we make no medical claims.

Indications (as posted on the analysis)

Unagi public bath: skin conditions, neuralgia, convalescence and others. Matsumae: neuralgia, rheumatism, skin conditions and others

Indications are an official statement based on the water analysis, not a guarantee of treatment. They are kept separate from opinions.

SourceSource temperaturepHRadonChecked
Unagi public bath source88.8UnconfirmedUnconfirmedno check date
Unagi Onsen Matsumae (fumarole-fed)97UnconfirmedUnconfirmedno check date

Three things not to miss

01

Sume Square

In the village Steam ovens open to visitors. Put the eggs or vegetables you have brought in a basket, set it in the sume and cover it with a straw mat or cloth bag to steam. There are tables and chairs so you can eat on the spot. 300 yen; shared baskets and gloves are provided.

You get to use hot spring heat for cooking, not just bathing, with your own hands. The steam is extremely hot, so always wear gloves.[1]

02

Unagi Onsen public bath

On the lakeshore The communal bath of a toji village dating back to the Edo period. Simple sulfur water from an 88.8 °C source, free-flowing. Adults 300 yen; in summer (June–September) it closes for a midday break.

A small tub in a wooden building and easy chat with the regulars: you bathe alongside locals in the spring where Saigo Takamori once took the waters.[2][3]

Sloping lane lined with wooden buildings
Photo information
Sakaori (talk) CC BY 3.0 View original page
03

Where Saigo Takamori stayed a month

Unagi Onsen In December 1874 Saigo Takamori arrived at Unagi Onsen with hunting dogs and attendants and stayed about a month (Wikipedia). The prefecture's tourism site also introduces Unagi as a hidden spa known for Saigo's stay.

The place where a hero of the Meiji Restoration retreated after leaving government survives as a hamlet that has changed remarkably little.[4][1]

The story

A toji village on a crater lake

Unagi Onsen is a tiny spa hamlet on the shore of Lake Unagi in Ibusuki, hemmed in by hills with the lake at its feet. According to Wikipedia it was founded by a monk in the Edo period, and the communal bath opened in 1901. Steam rises from the ground and the whole village smells of sulfur.[3][4]

Saigo's retreat

In 1874, after leaving the government, Saigo Takamori came to Unagi Onsen. According to Wikipedia he arrived in December with hunting dogs and attendants and stayed about a month, hunting near Mt Kaimon by day and bathing at night. The prefecture's tourism site likewise presents Unagi as the spa known for Saigo's stay.[4][1]

Living with sume

Sume are natural ovens fed by hot spring steam. They stand in the yards of village homes and are still used for daily cooking: potatoes, eggs and vegetables are steamed with nothing but vapour from the ground, no fire needed. Visitors can do the same at Sume Square, or order sume-steamed eggs and potatoes at Unagi Onsen Matsumae.[1][6]

Going solo

Easy for solo travellersUnconfirmed
Weekend / peak restrictionsUnconfirmed
Where to eat dinnerSteam your own food at Sume Square, or order steamed eggs and potatoes at Matsumae
Private bathUnconfirmed

checked 2026-10-09

Through the year

Recommended months

Months open

JanFebMarAprMayJunJulAugSepOctNovDec

"Recommended" and "open" are recorded separately. Check the season for seasonal springs.

Jun · Jul · Aug · Sep — The public bath closes 13:00–15:00 (Matsumae does the same June–October)

Dec — Saigo Takamori stayed here in December 1874 (Wikipedia)

Food, culture & experiences

Available / bookable

Guided village walk with sume cooking

Tours with a local guide walk the village and try sume cooking together (per the prefectural tourism site; check prices and dates with the organiser)[1]

In the village
Available / bookable

Yamakawa Sand Bath Sayuri

Sand baths facing Mt Kaimon and the East China Sea. Adults 1,100 yen; closed Wednesdays[7]

10 minutes by car from Yamakawa Station

Editors' guide

Bring eggs, vegetables, salt and a plate, and steam your lunch at Sume Square. Afterwards, soak in the sulfur water at the public bath or Matsumae. A taxi from Yamakawa Station is the practical way in. The public bath closes on the 1st and 3rd Mondays and Matsumae on Fridays, and both take a midday break in summer, so plan your timing.

The "editors' guide" above is written by the editors from sources; it is not a visitor's opinion.

Visitor reviews

No reviews yet. While the review platform is being prepared, we do not display fictional reviews or ratings.

Review posting is in preparation, with visit date, facility, comments on water, scenery and access, photos, language and reporting.

Unconfirmed & notes

  • Fees, hours and closing days for the public bath differ between the Ibusuki tourism site (300 yen, closed 1st and 3rd Mondays) and the prefectural site (200 yen, closed 1st Monday); we follow the former
  • Route buses from Yamakawa or elsewhere, accommodation in the village, water colour and tattoo policies were not confirmed

Sources

  1. 鰻温泉スメ広場(天然のかまど「スメ」)(かごしまの旅)鹿児島県観光連盟 · 2026-10-09
  2. 区営鰻温泉(いぶすき観光ネット)指宿市観光協会・指宿市 · 2026-10-09
  3. 区営鰻温泉(かごしまの旅)鹿児島県観光連盟 · 2026-10-09
  4. 鰻温泉 - Wikipedia(日本語版)Wikipedia · 2026-10-09
  5. うなぎ温泉松前(いぶすき観光ネット)指宿市観光協会・指宿市 · 2026-10-09
  6. 山川砂むし温泉「砂湯里~さゆり~」(いぶすき観光ネット)指宿市観光協会・指宿市 · 2026-10-09

Register sources

Data status

Name & locationPublishedCoordinatesPublishedSpring typePublishedPhotosPublishedFacilitiesPublishedVisiting info (dated)PublishedEditorial articlePublished

Updated 2026-10-09

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