The objects are indeed real – they are the centuries-old skeletal, human remains exhumed from Rome's underground catacombs.

and Christian catacombs. But one of the things we do see in the middle of the third century is there's a growing [number] of Christian burial societies run by the church. We even hear of whole ...

All Christian catacombs in Rome are property of the Catholic Church, and no one is allowed to explore them without special permission from the Vatican. "It's not so easy to get the permission.