Party in the catacombs of Paris?

I'm sure most of you have heard about the Catacombs of Paris. However, this ossuary holds the remains of about 6 million people. They are located in the tunnels of the old stone mines. And since the early 19th century a small part of it became a tourist attraction. Since 1874 they are open on a regular basis for visitors.

Catacombs, Paris

So, The Catacombs have always been an object of interest. There are also many people who enjoy spending time downstairs, and even make parties....