paris catacombs illegal

>>1062317
>Now you have this tourist attraction but you'll only access part of the catacombs. Anyone know of any guided tours that go into other area's of the catacombs?
Heard they are illegal access, so you likely won't find it advertised (if it exists).

>>1062317
One of my mates visited some of the no-access areas but it was while he was spending a year there for uni and he did it with a group of friends he met in the uni's outdoors club - I doubt there's any easy way of doing it as a tourist.