Kusatsuonsen Bouun

望雲
Verified

Gunma Kusatsu

群馬県 草津町

Onsen RyokanFree-Flowing Onsen
SOURCES
♨Bandaiko
万代鉱
Acidic hydrogen sulfate chloride spring (hypotonic acidic high-temperature spring)
Acidic SpringpH 1.7594.6℃Self-flowi…
Open Onsen Analysis Viewer
♨Nishinokawara Gensen
西ノ河原源泉
酸性・アルミニウム－硫酸塩・塩化物温泉
Acidic SpringpH 253.7℃自然湧出
Open Onsen Analysis Viewer
USAGE
Free-Flowing Onsen
HeatedNo
DilutedNo
RecycledNo
FilteredNo
DisinfectedNo
AdditivesNo

The temperature, pH and component values shown here are based on the hot spring analysis (source). Actual values in the bath may differ depending on heating, dilution, recycling and filtration. Please check current usage status at the facility.

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Kusatsuonsen Bouun

From ¥17,600 / person / night (tax incl.)
4.7(1282)
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Kusatsu Onsen — overview, spring types, and access
酸性泉
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Acidic Spring — benefits, bathing tips, and onsen-hopping order
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📝First contributor: Onsen Enthusiast
✨ The descriptions, catch phrases, and translations on this page are generated by AI (Claude). pH, temperature, and component values are OCR-extracted from the official analysis report. Learn more