Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Termas de Pemehue, located in the wild Los Lagos Region of Chilean Patagonia, offers a remote and authentically natural sulfate thermal experience where volcanic springs emerge from the temperate rainforests of the Chilean lake district — a landscape dominated by snow-capped volcanoes, glacial lakes, and ancient Araucaria monkey-puzzle forests. The naturally hot sulfate waters, heated by the prolific volcanic activity of the Southern Andes, flow through outdoor pools in a setting of extraordinary ecological richness that represents one of the least-disturbed thermal landscapes in South America. Pemehue's remoteness, accessible only via unpaved roads through national park land, ensures that visitors experience a genuine wild hot spring immersion rather than a commercial spa facility — making it particularly prized among Chilean nature travellers.
Insider tip — Termas de Pemehue are tucked in the Andean foothills of the Araucanía region, traditional territory of the Mapuche people, amid native lenga beech and coigüe forests that blaze with autumn color each April and May. The sulfate thermal waters emerge at moderate temperatures and have been used by Mapuche communities for healing long before modern spa infrastructure arrived. The facility is small and family-operated, offering an intimate alternative to the larger Andean resort spas. Access requires a scenic drive through farmland and then forest on unpaved roads.