The ‘Caldara di Manziana’ is a unique and special place, one hour's drive from Rome, recognised as a Natural Monument. It is a marshy area, characterised by sulphurous waters flowing from underground. Here, you can admire the largest spring where a geyser develops phreatic explosions of sulphurous water reaching a temperature of 27 °C. But this is not the only peculiarity of the area: there is a grove of white birch, a species that usually lives in cold climates, at higher altitudes; yet it is here.
