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Official classification
Spring type (therapeutic classes)
Official spring-type name (as recorded)塩化物泉
- Source temperature
- 46.6°C
- pH
- Unconfirmed
- Flow rate
- Unconfirmed
- Radon
- Unconfirmed
Appearance & feel
Water colour · Feel
Unconfirmed
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.
No facility information yet.
Getting there
Reachable by public transport
空路 - 松本空港、鉄道 - しなの鉄道：中軽井沢駅、バス - 西武観光バス：バス停「星野温泉トンボの湯」、車 - 上信越自動車道：碓氷軽井沢IC
- Checked
- no check date
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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
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Kose Onsen
Kose Onsen
3.8 km
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Photo information
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Register sources
- 星野温泉 - Wikipedia(日本語版)Wikipedia · CC BY-SA 4.0 · 2026-10-09
- Wikidata Q11513153Wikidata · CC0 · 2026-10-09
Data status
Name & locationPublishedCoordinatesPublishedSpring typePublishedPhotosPublishedFacilitiesIn preparationVisiting info (dated)In preparationEditorial articleIn preparation
Updated 2026-10-09
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