Secret societies have always been part of conspiracy theories and widely recognized as myths. In fact, few of these really exist for lack of any reasonable evidence. But it was only recently that evidence hinting to a supposedly still functioning underground society was said to have been discovered in the Parisian catacombs. Here's what Paris's police found during a visit to the catacombs... Paris's catacombs are a large trail network of former mining tunnels. What are now the catacombs of Paris used to be a long network of mines for limestone quarries from as far back as the 13th century. Toward the 17th century, Paris began facing a huge problem with its burial system to the point where the city was overflowing with bodies. At which point, it was considered best to relocate the remains of about 6 million people to the underground tunnel system, which now serve as the catacombs.

Back in 2004, the police stumbled upon evidence of a secret organisation dwelling within the catacombs.

In a routine patrol through the catacombs the Paris police discovered a fully equipped cinema-cum-restaurant in a large and previously uncharted cavern underneath the capital. The supposed "headquarters" of this group had been fully equipped with electricity and phone lines, with a ceiling that was painted with swastikas, Celtic crosses, and stars of David. Experts suggest that this indicates that the organisation is not radically religious.

When the police returned a few days later to investigate the source of electricity, everything had been cleaned out.

The police found the electricity and phone lines cut, with a note set in the middle of the room saying, "Do not try to find us." The original discovery of the room included a fully functional amphitheatre with a tape recorder that played the sound of dogs barking whenever tripped by someone entering the room - clearly to keep away onlookers. All of the equipment was moved as quickly as it was found.