Originally Posted by uno

All the buildings built above Paris are built from the stone below. That's why they can't build skyscrapers in Paris. The city is standing on bedrock like swiss cheese. After x amount of years in most of europe you are allowed to dig up, throw away, or bury on top of graves. As they expanded the city and dug up cemeteries they would drop the bones down shafts into the quarries.

The bone room in his pics does NOT appear to be on the official tour available to regular tourists. The bones in the legal tourist parts are generally clean, unbroken and geometrically arranged. I'd be willing to bet he got a tour from local cataphiles such as Lezard and Ulrich of Zone Tour or some such similar group.

My main hobby is exploring abandoned places. I've been in those same sections of the Parisian catacombs. I have rolls and rolls of pictures of the catacombs, ww1 and 2 bunkers, abandoned military bases, and abandoned hospitals around europe and the US.