Catacomba dei Santi Marco e Marcelliano
Rome, Italy
The Catacomb of Santi Marco e Marcelliano is a catacomb between the ancient via Appia antica and via Ardeatina in what is now the Ardeatino district of Rome. With the catacomb of Callixtus and the Catacomb of Balbina, it is one of three catacombs in the Callixtian Complex between the via Appia antica, via Ardeatina and vicolo delle Sette Chiese.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).