Speak French or die !

But...
If you really really really want to understand what the Catacombes are, you need to go there.
On this page you can read parts of an american sci-fi novel , and check a reference map of the famous southern web of the Catacombs of Paris. Most of the events detailed in this novel are true as are the Cata-nicknames.

This page is the only english area.
Have fun!