Terme di Riolo’s is the only spring mud in Emilia Romagna. Unlike prepared or artificial mud, it originates in the bowels of the earth, already naturally mixed with salsobromoiodic water, driven by methane gas and carbon dioxide, through small natural cones, located in the Bergullo area, not far from the town of Riolo Terme .
The particular chalky-sulphurous conformation of the subsoil, characteristic of the Vena del Gesso, contributes to its strong mineralization. The mud is collected in a protected tank and from there taken from time to time, respecting the natural balance.
Although it is a mud that is already mature in itself, that is rich in substratum of argilloid mineral substances, organic humus processed by microorganisms and precious trace minerals thanks to the very long time spent in contact with the thermal water, it rests further in special tanks in contact with solsobromoiodic flowing water.
This second maturation allows the continuation of chemical, physical and biological phenomena that increase its therapeutic properties.