Between the towns of Itri and Fondi, in southern Lazio, the valley of Sant’Andrea provided a natural passage through the harsh and wild Aurunci Mountains, now a protected area. In this valley you can find the remains of a section the original route of the Via Appia Antica. Consul Cladius Appius Caecus built the famous Roman road in 312 B.C., connecting Rome with Brindisi, on the southeastern Italian coast. One of the best preserved stretches of the Appia Antica is the stretch in this valley, which was used until the…