Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Font del Metge — Catalan for 'The Doctor's Spring' — is a naturally sulphurous mineral spring whose name reflects a long local tradition surrounding its waters. Such springs, informally esteemed by generations of folk custom, often carry the title of 'doctor' in recognition of their long-standing reputation within local culture. The spring offers an authentic, unmediated encounter with the geothermal heritage of the Pyrenean region.
Insider tip — Font del Metge (Doctor's Spring) is a historic sulfurous source in the Ariege Pyrenees above Ax-les-Thermes, its Catalan name acknowledging the long medical tradition of prescribing these waters for skin and respiratory conditions. The spring sits in a narrow gorge where the Oriege and Ariege rivers meet, with steep limestone cliffs providing a dramatic natural amphitheater. The water has the same hydrogen-sulfide signature as the main Ax springs but emerges in a wilder, less-developed setting preferred by hikers.