Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Nagashima-cho Onsen Center Tsubaki no Yu sits in Nagashima, Kagoshima prefecture, on Kyushu island. Its sulfurous water emerges at 43°C with a pH of 6.5. Guests can move between an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Tsubaki no Yu, the camellia spring, sits in Nagashima town on a peninsula jutting into the Yatsushiro Sea in southern Kagoshima. The volcanic spring draws from the active geothermal belt of the Ryukyu Arc, and wild camellia forests line the coastal roads between ferry landings.