Catacombs of Priscilla

40,000 tombs line the 13km of tunnels in these catacombs. Some of those buried here include Pope Marcellinus, Pope Marcellus, Pope Sylvester, Felix and Philip, Pudenziana, and Praxedes, and Maurus and Simetrius. These catacombs also include the oldest depiction of the Virgin and Child, with the prophet Balaam.