Any visitor to Rome will want to see and explore the popular historical and cultural sites - the Colosseum, the Forum, the Trevi Fountain and, of course, the Vatican. But a large part of the city's ancient history actually lies underground in the tomb-lined tunnels or catacombs that weave beneath the streets of Rome.
This is a companion discussion topic for the original content at https://www.worldhistory.org/article/1358/an-ancient-city-beneath-rome-visiting-the-catacomb/.