The water flows out at a temperature between 34 and 40 °C. If you are careful, you can immerse yourself in the warmth of the ancient natural spring of the Thermal Baths of Saint Calogerus.
Though it does not contain gypsum, sulphur or other sublimates, the water that flows from the ancient thermal spring of Saint Calogerus is nevertheless volcanic in origin. It passes through volcanic soils which, by nature, are rich in these minerals.
When the wind drops, bring your nose close to the water to smell the typical sulphur odour of all volcanic areas.