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Iya Onsen

Tokushima · 祖谷温泉

Iya Onsen is a hot spring town in Tokushima, Japan. The water leaves the ground at 38°C, comfortably warm. It measures pH 9.1 — strongly alkaline. Officially the water is classed as sulfur spring. 1 inns take visitors here.

Sulfur spring

The water here

Sulfur spring 硫黄泉

The classic rotten-egg smell and milky white water. It can tarnish silver jewellery, so take it off.

The numbers

Water temperature
38°C
pH
9.1 (strongly alkaline)
Inns
1
Address in Japanese
徳島県三好市池田町松尾松本

Figures from the town's Japanese Wikipedia article.

Where it is

33.9214, 133.8175 — open the map

Read more

Japanese Wikipedia

Other towns in Tokushima

宍喰温泉Tokushima
Bicarbonate spring
四季美谷温泉Tokushima
Sulfur spring
船瀬温泉Tokushima
Simple spring
鷲敷温泉Tokushima
Sulfur spring
神山温泉Tokushima
Chloride springBicarbonate spring
Ōboke OnsenTokushima · 大歩危温泉
Simple spring
月ヶ谷温泉Tokushima
Sulfur spring
紅葉温泉Tokushima
Bicarbonate spring

Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.