Onsen OniOnsen Oni

Search Onsen Oni

Search onsen, areas, prefectures and pages.

Kamenoko Onsen

亀の甲温泉かめのこうおんせん

Public Bathhouse
Kyushu & Okinawa·Kumamoto

Day Use

Yes
11:00–22:00

13:00-22:00 (private bath)

¥300

¥1500 private bath

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

Capabilities

Private BathYes

Private bath available for day-use visitors or hotel guests to reserve

Policies & Services

WashingYes

Shower, wash stations, soap and shampoo provided

ParkingYes

On-site or nearby parking available

Water treatment

Pure source water· 源泉かけ流し (gensen kakenagashi)
from Article 18 disclosure
  • Added water
    No
  • Reheated
    Yes
  • Recirculated
    No
  • Disinfected
    No
  • Bath additives
    No

亀の甲温泉

Kamenoko Onsen

Operated by · 亀の甲温泉

Bicarbonate
Known good for
  • Smooth skindry, rough skin
  • Recoveryfatigue, stress

A sodium bicarbonate spring of the classic jūsō-sen style, weakly alkaline and soft on the skin. The on-site notice describes the water as smoothing and silky underfoot — squarely in Japan's beauty-water family. The source emerges lukewarm at 35.4 °C so the bath is reheated for comfort, but otherwise it runs as a free-flowing, undiluted source with no recirculation or disinfection.

Sampled at wellhead·Analyzed Jan 25, 2018

Explore the water

Programs

Loading map…

4.0

1 review

5
0
4
1
3
0
2
0
1
0
SM
Sergey M
1 year ago· edited

384. Kamenoko Onsen, Kikuchi, Kumamoto ★★ An old-school onsen for ¥300. Opening hours are listed as 11:00 to 22:00 (except Tue). They stamp the Kyushu 88 Onsen stamp rally. The staff are a nice elderly owner and his granddaughter. There was a little story here that I wrote about earlier. When I was leaving, the old man asked where I was from. After I answered, he gave me a sweet potato as a gift (some onsen steam them). My return matryoshka doll caused a stir. The granddaughter was delighted, first she took the matryoshka apart, then asked if she could take a photo of it. I said, it was a gift. Then she asked again, and the old man told her it was a present. The elderly male guests joined in right away too, although in the changing room they had shown interest but were too shy to ask. Inside there is an old-style bath with clear water, temperature 41.5. It is easy to breathe inside. Outside there is a small stone bath in a greenhouse-like room, the water is clear. Temperature 39.5. Easy to breathe. It is impossible not to recommend this place after such a warm welcome and reception. 10.01.2025

1
2
3
4
5
6

Last updated July 26, 2026