Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesCalcium
This mountain hot spring, Cileungsing, is located in Subang, West Java. The sulfurous, thermal water reaches 40°C at pH 7.3, feeding an open-air pool for wild bathing amid the surrounding hills.
Insider tip — Cileungsing mountain hot spring in the Subang-Sumedang highlands of West Java — a natural volcanic spring in the forested Sunda volcanic arc zone. Name 'Cileungsing' derives from Sundanese, referring to a local stream. Remote, nature-immersive setting.