Le Caldane are thermal water baths near Colle Val d’Elsa with hot water springs boasting therapeutic properties known since Etruscan-Roman times. The purgative water, clear and rich in mineral salts, was in fact known to cure a variety of ailments including skin rashes. The ancient spas are still used today by the local people who seek respite from the humid summer weather. The water that flows from the springs joins that of the Elsa river which is replenished right here in Colle Val d’Elsa .