Beneath Rome's streets lie miles of tunnels—the catacombs. Initially used by early Christians as burial grounds, these underground networks became places of mystery, refuge, and possibly, crime.
San Callisto Catacombs
The San Callisto Catacombs on the Appian Way contain the remains of numerous early Christian martyrs and popes. Carved from volcanic rock, they stretch for miles beneath the city. Most is known; much remains unexplored. Some passages have never been fully mapped.
A Safe Haven—and More
During periods of Christian persecution, the catacombs provided refuge. But they also served other purposes: hiding places for fugitives, secret meeting grounds, and possibly disposal sites for bodies. Ancient texts hint at criminal activity in the depths, though evidence is scarce.
Modern Investigations
Today, archaeologists continue to explore and map the catacombs. New passages are still being discovered. What secrets do they hold? Who else used these tunnels? Some passages show signs of being sealed deliberately. Why?
The catacombs remain one of Rome's great mysteries—accessible to tourists in certain areas, yet hiding countless secrets in the darkness.