Catacombs of Rome - Early Christian catacombs were extractions from the earth containing niches (loculi). Ladders from ground level led to ambulatories called galleries, where burial plots were located. Catacombs, found throughout the Empire, exist primarily in Rome because the city's density at its height created a shortage of land for burial.
The Catacombs of Rome in Italy - many visitors have reported having frightening encounters with apparitions walking the halls of the catacombs - voices and whispers are extremely common in the tunnels coming out of these burial niches, objects have been slapped and knocked out of people's hands by unseen forces, people report being pushed, pulled, touched, or tugged on, intense feelings of fear and unease
“The catacombs of St. Callixtus are among the greatest and most important of Rome. They originated about the middle of the second century and are part of a cemetery complex which occupies an area of 90 acres, with a network of galleries about 12 miles long, in four levels, more than twenty meters deep. In it were buried tens of martyrs, 16 popes and very many Christians.