Catacombs, Parisian underground, France - This is part of the large maze that one can easily get lost in. These catacombs are not open to the public but many secret explorers and ravers still sneak in.
The Catacombs of Paris are underground ossuarys in Paris, France. Located south of the former city gate the ossuary holds the remains of about six million people and fills a renovated section of caverns and tunnels that are the remains of Paris's stone mines. Paris's earliest burial grounds were to the southern outskirts of the Roman-era Left Bank city. You are checked for bones were you leave.