Onsen OniOnsen Oni

Hakone Onsen Sanso Nakamura

箱根温泉山荘 なかむらはこねおんせんさんそう なかむら

Lodging
Hakone OnsenSengokuhara Onsen
Kanto·Kanagawa
0460-84-6012hpdsp.jp

Policies & Services

TattooYes

Allows entry with visible tattoos

Unverified

Water treatment

Pure source-flow
from Article 18 disclosure
  • Added water
    No
  • Reheated
    No
  • Recirculated
    No
  • Disinfected
    No
  • Bath additives
    No

大涌谷温泉 蒸気造成混合泉 2号線(仙石原方面)、3号線(強羅方面)

Owakudani Onsen Steam-Generated Blended Spring (Line 2 / Line 3)

Operated by · 箱根温泉山荘 なかむら

Mixed source

酸
Acidic
+ Sulfate · Chloride

A steam-generated acidic spring fed by the volcanic fumaroles of Owakudani, leaning to sulfate and chloride. At pH 2.1 it is strongly acidic, sharp enough to prickle slightly on the skin, and arrives slightly cloudy-white with a faint hydrogen sulfide note. A generous 157 mg/kg of metasilicic acid leaves a thin silica film that smooths the skin.

Source temperature
60.6°C
Hot
Tonicity
1.28g/kg
Hypotonic
Free H₂S
1.28mg/kg
Typical
Color
slightly cloudy white
Odor
faint hydrogen sulfide
Highlights
  • Ultra-acidic
  • High silica

Analyzed Sep 28, 2018·神奈川県温泉地学研究所·Cert no. 神奈川県知事登録第1号

Loading map…

SM
Sergey M
1 year ago

170. Hakone Onsen Sanso Nakamura Visited for day-use bathing for 1100 with a towel (listed hours 10:00 to 15:00). Used the indoor bath with a bamboo view through glass. Fixtures are a bit worn. Breathing inside is tolerable. Water is cloudy white with fine white calcium deposits, very faint sulfur smell. Temperature is hot. When I was leaving, a dog from the upper floor came to see me off. If you're hanging out in northern Hakone and it's convenient, worth visiting for the water. The bamboo view through glass isn't super impressive, but it's still a plus. And the dog is great.