
Photo: Saigen Jiro · CC0 · Wikimedia Commons
Mikurigaike Onsen is a hot spring town in Toyama, Japan. The water leaves the ground at 70°C, hot. It measures pH 3.1 — acidic. Officially the water is classed as acidic spring and sulfur spring. 1 inns take visitors here.
Strongly acidic, sometimes below pH 2. It stings on cuts and is not for long soaks.
The classic rotten-egg smell and milky white water. It can tarnish silver jewellery, so take it off.
From Wikimedia Commons. Tap a photo for the photographer and licence.




Places from Wikidata, photographs from Wikimedia Commons. Distances are in a straight line from the town.
Many public baths still turn away visible tattoos, and the rule is set by each bath, not by the town. The reliable way round it is to bathe privately: a room with its own open-air bath, or an inn with a private bath you can book for yourselves.







Figures from the town's Japanese Wikipedia article.
36.5819, 137.5961 — open the map
Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.