Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Erzi Quanlu, or Second Son Spring Road, is a sulfurous geothermal spring site in China whose folksy name suggests an informal, community-rooted bathing destination associated with local history or a founding family's story. The sulfurous mineral waters accessible along this spring road have served the local community for generations, providing a natural source of heated water valued within a long thermal tradition for the comfort it brings to the skin and for soothing, relaxing soaks. The spring road character of the site reflects the Chinese tradition of integrating natural hot spring resources into the everyday life of farming and mountain communities.
Insider tip — Erzi Quanlu is a natural spring trail in Hualien County along Taiwan's rugged Pacific coast, where sulfurous waters seep from forested hillsides. The walking path connecting spring pools winds through tropical vegetation with views toward the Pacific Ocean. Water temperature is naturally regulated by streamflow, creating a range of soaking temperatures along the route. Hikers combining this with a Taroko Gorge visit will find it an ideal muscle-soothing finale.