A twelve-kilometre fracture in the earth's crust, through which hyper-thermal waters (40° - 58° C), rich in sulphurous  salts and calcium bicarbonate, magnesium, etc.,  are forced by the pressure of sulphurous  and carbonic gases. The most important and famous of all is Bullicame  - a luminous white mass of calcium.


THE BULLICAME SPRING

The Bullicame spring, with its sulfate-sulfur alkali-iron fluoride waters and its 58°C temperature, has always been highly appreciated for its therapeutic properties. These characteristics are attributable to the chemical and physical composition of the spring which make it appropriate (and one of the most highly valued in Hydrological Medicine) for many kinds of therapeutic applications, in particular, in the cure and prevention of chronic disturbances of the whole breathing apparatus, in bone and joint pathologies, skin complaints, genital complaints and dysmetabolic diseases. Treatments using these waters are highly beneficial for all these complaints. The splendid 2,000 square-metre  monumental pool is fed by water from this spring.


THE POPE'S BATH SPRING

Natural springs with different chemical and physical compositions are present within the grounds of the Termedei Papi and are utilized in the therapies of a variety of medical complaints besides the ones already mentioned, and which include gastroenterology, angiology and stomatology. The Pope's Bath, for example, with its carbonic-ferruginous properties is used in the treatment of peripheral vasculopathies.