What are cataphiles in the Paris Catacombs?
Updated October 27, 2026
Quick answer
Cataphiles are urban explorers who enter the old quarry tunnels under Paris, a network of around 280 km of which the visitable ossuary is only a small part. Going into the network without an official escort has been illegal since 2 November 1955; police patrol it and can fine you €60.
The tunnels are dangerous: the layout is confusing, passages are low and narrow, parts flood, and cave-ins, though rare, happen. The legal way to go beyond the standard visitor route is a guided tour with restricted access, which opens locked parts of the ossuary.
Who cataphiles are
The name covers the urban explorers who go down into the former mines of Paris without permission. The underground has hosted everything from the Resistance in 1944 to an illegal cinema built by the group les UX, discovered by police in 2004 under the Trocadéro.
Why it is illegal, and the risks
Access to the network without an official escort was banned on 2 November 1955. Police patrol the tunnels, and cataphiles call them 'cataflics'. Beyond the fine, the real risks are physical: getting lost, flooding, old pipes and wiring, and collapses. The only officially recorded death in the tunnels, Philibert Aspairt in 1793, was a man who lost his way.
- Banned since — 2 November 1955, without an official escort
- Fine — €60
- Network length — Around 280 km
The legal way to see more
Guided tour companies can have gates opened inside the ossuary that stay locked for standard ticket holders. The restricted access tour takes seven people or fewer into closed areas for $212, the small-group tour six people for $234, and the special access tour, which names an underground chapel and the quarrymen's carvings, up to 14 people for $156. None of them goes into the illegal network.
What you can see legally
The standard timed ticket covers about 1.5 km of the ossuary, 20 metres down, with an audio guide; it costs €31 at the official office. Guided tours go further inside the ossuary only, through gates staff unlock for them, and include an English-speaking guide. Nothing sold on this site, or anywhere legitimate, takes you into the wider quarry network: that remains closed, and the risks described above are the reason.
Frequently asked questions
Is it illegal to enter the Paris Catacombs tunnels?
Yes, outside the official ossuary route. Entering the network without an official escort has been illegal since 1955 and carries a €60 fine.
How big is the tunnel network under Paris?
Around 280 km, according to Wikipedia. The visitor route is about 1.5 km of it.
Can a tour take me into the cataphile tunnels?
No legitimate tour does. Restricted-access tours open locked areas inside the ossuary only.
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