La domus de Janas, known by the name of S’acua de is dolus, located near the country church of St. Peter, dates back to the Recent Neolithic (late 4th-first half of the 3rd millennium B.C.), and is to date one of the oldest known archaeological remains in the territory of Settimo San Pietro.
The tomb consists of a small artificial cave carved out of the local soft stone, accessible through a small pseudo-quadrangular opening that originally housed an enclosing element and leads first to a short antechamber and then to the innermost burial chamber.
Due to rainwater seepage and coming from an underground spring, probably since ancient times, it became necessary to dig a small channel in front of the entrance to drain the water outside.
Folk tradition has it that this water, in addition to being potable, had miraculous properties capable of healing all pains: hence the name S’acua de is dolus, namely “the water that soothes aches and pains“.