Ryokan (inn) · Status unconfirmed
Yumotoya Onsen Ryokan
- Day-use bathing
- Unconfirmed
- Fee
- Unconfirmedno check date
- Hours
- Unconfirmedno check date
Photo information
Hokuriku & Koshinetsu · Onsen area
Iwamuro Onsen
いわむろおんせん · 岩室温泉
Niigata · 新潟市西蒲区
OpenNational Health Resort Onsen
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Official classification
Spring type (therapeutic classes)
Official spring-type name (as recorded)含硫黄-ナトリウム・カルシウム-塩化物泉
- Source temperature
- 54.3°C
- pH
- Unconfirmed
- Flow rate
- 287 L/min
- Radon
- Unconfirmed
Appearance & feel
Water colour · Feel
Black (moor water etc.)Yellow
Colour and feel are listed only where a source states them. They vary by day and by bath.
This area has basic information only. In-depth articles are being added.
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.
Getting there
Reachable by public transport
越後線岩室駅より路線バスで約11分
- Checked
- no check date
Photo gallery
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.
Onsen areas nearby
Register sources
- 岩室温泉 - Wikipedia(日本語版)Wikipedia · CC BY-SA 4.0 · 2026-10-09
- Wikidata Q11474349Wikidata · CC0 · 2026-10-09
Data status
Name & locationPublishedCoordinatesPublishedSpring typePublishedPhotosPublishedFacilitiesPublishedVisiting info (dated)In preparationEditorial articleIn preparation
Updated 2026-10-09
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