Kamiobo

上大坊かみおおぼう

Other
Kansai·Hyogo

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

天神泉源

Tenjin Spring
Sampled at mixing tank
Chloride
+ Iron-bearing
Classification

Sodium Chloride spring

A sodium-led iron-rich chloride spring classified as a strong-salt source, exceeding ocean salinity at 36.09 g/kg dissolved solids. It is rich in iron and oxidizes to a reddish-brown — the classic 'golden water' (kinsen) character of this district — leaving a thick mineral coating on the skin after bathing. Neutral pH and a generous 121 mg/kg of metasilicic acid round out a heavily mineralized water with real body.

pH
6.60
Neutral
Source temperature
99.4°C
Hot
Tonicity
36.09g/kg
Hypertonic
Flow rate
53L/min
Typical
Free CO₂
189mg/kg
Low
Color
very faintly greenish, dark brown, salty with almost no odor, with vigorous gas bubbling
Taste
salty
Odor
almost odorless
Highlights
  • Strong salt
  • Iron-rich
  • High silica
  • Top-decile hot

Analyzed Sep 24, 2019·公益社団法人 中央温泉研究所·Cert no. 甲第3734号

Loading map…

SM
Sergey M
1 year ago

343. Kamiobo, Arima Onsen Visited as higaeri for 1000 (listed hours 15:00-18:00). They provide a towel and you can drink water from the cooler by the changing room entrance. Located on one of Arima's main shopping streets. A ryokan with an old-school horror-vibe onsen. To reach the bath area you need to go down to the basement via stairs. This is absolutely atmospheric and authentic, like something out of a horror movie like The Texas Chain Saw Massacre. Breathing inside is comfortable. There are two baths: one with clear water (temperature around 38.5) and one with cloudy brown water (temperature around 45). Shower, body wash, and shampoo available. Really cool atmospheric place in the heart of Arima Onsen. From the outside you'd never think this ryokan has a higaeri option with such an old-school onsen. Like, literally on a shopping street full of tourists, and minutes later you're in an atmospheric secluded onsen in a basement. Highly recommended for a visit, if the old-school vibe doesn't scare you.