Cataphiles of Paris: Exploring the 6 Million Buried Bones

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At midnight in the 14th arrondissement, a cataphile known only as “Mr. X” quietly unfastened a manhole cover. A handful of young explorers crept into the opening, descending like thieves in the night into total darkness¹. They were entering an off-limits underworld: Paris’s catacombs.

Section Index

Empire of Death: A Buried History
Hidden Gateways and Secret Passages
The Cataphile Underworld: Parties, Art and Codes
Storming the Cellars: Crime and the Unexpected
The Perils of the Pitch-Black

Officially, only a 2 km museum route (open by day, with guides) is permitted; the rest of the sprawling 150-200 mile (250-320 km) tunnel network is strictly forbidden²³. Yet on any given weekend (and often at midnight), young Parisians ignore that ban, using secret cataphile entrances to slip underground.

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Authorities warn the practice is illegal and perilous²⁴, but a tiny subculture of urban explorers treats the catacombs as a daredevil playground. In short, Paris Catacombs secret entrances are real, but they come with criminal penalties and real danger.

Empire of Death: A Buried History

Beneath the City of Light stretches a hidden city of dark. In the words of Victor Hugo, the underground quarries once built Paris’s great structures are “the city’s intestines”⁵.

Over decades from 1786 to about 1860, officials carted Paris’s overflowing cemeteries into these tunnels. Ancient shafts and galleries were repurposed into ossuaries; today about six million Parisians lie entombed in neat rows of bone walls⁶⁵.

One passage at the official ossuary entrance still bears its 19th-century sign: “Arrête! C’est ici l’empire de la mort” (“Stop! This is the empire of death”)⁶.

Tourists on the bona fide 1.5 km underground tour soon find themselves surrounded by skulls and femurs, artfully arranged. But beyond that tiny curated mile lies an almost unimaginable expanse: dark, unmapped quarries and tunnels spanning much of Paris. Estimates of the total length vary, about 150-200 miles (240-320 km) of corridors⁷³. (For comparison, London’s Tube network is about 250 miles.)

Over the centuries these depths have had many uses. Napoleon’s photographer Nadar experimented with early flashlights on its winding passages, remarking that the catacombs were “that place everyone wants to see, and no one wants to see again”⁸. In World War II they sheltered both Resistance fighters and German soldiers. After the war, a new breed of visitor emerged. By the late 1960s and 70s, French students and artists began venturing underground for adventure and inspiration⁹. They called themselves cataphiles, a term borrowed from the Greek for “lover of the catacombs.” Inspired by punk’s DIY spirit and French speleology (caving), these explorers systematically mapped the tunnels and created an entire subculture¹⁰¹¹.

But for the city, the tunnels have always been a public hazard. In 1774, a sudden sinkhole opened 20 meters deep beneath Avenue Denfert-Rochereau, swallowing houses, a reminder of Paris’s unstable foundations¹². And as cemeteries overflowed, the health risk was acute. In 1780 a cemetery wall collapse spilled corpses across streets, precipitating the catacombs’ creation as a sanitary measure¹³¹².

By 1786 a consecrated quarry at Tombe-Issoire was filled with bones; the ossuary continued growing for decades. Since 1809 at least a small portion (now about 1.5 km) has been officially open to educate the public about death and history¹⁴¹⁵. But after more than 25 years of bone-moved processions and the occasional cave-in, the city placed strict limits. In 1955, after several collapses and rescues of stranded explorers, the Prefecture of Police formally banned any unauthorized entry into the quarries¹⁶.

Hidden Gateways and Secret Passages

Yet cataphiles have adapted. The tunnels are littered with hidden entrances found by generations of explorers. Some are simply old sewer grates left ajar, or cast-iron career plates on streets. Others are “chatières” (low crawlspaces) in disused railway tunnels or the Metro, or even basement crawlspaces in old buildings¹⁷¹⁸. Guides to the underworld speak of manholes pried open with crowbars, vent shafts tumbled with pickaxes, or drainage covers quietly unscrewed.

These passageways can be extremely well camouflaged. Many tunnels still bear etched street names, which cataphiles use like an inverted GPS; but cunningly, some street-names on walls are deliberately misleading graffiti placed by earlier explorers. The cataphiles have their own maps and secret codes. Some refer to known zones by number or nickname (e.g. the enormous Grand Réseau Sud). Others take pride in discovering a new “lost ossuary” or a broken trapdoor into an abandoned shaft.

Despite constant sealing by authorities, cataphiles claim that new holes appear as quickly as old ones are closed¹⁸²¹. The official stance is simple: every entrance not in the museum is illegal. But word-of-mouth and the internet change the game. Today a Google search for phrases like “Paris Catacombs secret entrances” or “how to enter Paris Catacombs illegally” returns scores of forum threads and urban-explorer blogs.

The Cataphile Underworld: Parties, Art and Codes

Down below, away from city noise, an extraordinary subculture flourishes. Cataphiles range from college students to engineers, most in their 20s-40s, maintaining strict secrecy about their identities²³²⁴. They describe the network variously as an “underground city,” a place for “creative neighborhoods,” or even “sacred spaces” to preserve²⁵.

In truth, it’s an anarchic blend of art project, techno club, and cemetery vigil. Artists carve stone gargoyles, paint murals, and install makeshift altars along forgotten galleries. As one veteran cataphile put it, “the community is absolutely huge. People go down there to party, explore, relax, even just to take their dogs for a walk”²⁴.

Indeed, Kataloween, an annual underground Halloween bash, draws dozens of costumed revelers every October. Last year’s Kataloween saw young Parisians seated by candlelight, drinks in hand, 20 meters underground amid candlelit graffiti²⁶²⁴.

When authorities do stumble into these scenes, the cataphiles shrug. They call it tolerance: decades of police crackdowns mostly yielded only a warning or a small fine. (By law the fine is about €60²⁷.) Paris officials often “turn a blind eye” to the gatherings unless something major happens².

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Surprisingly, cataphiles also self-police. They have unwritten codes prohibiting litter and “what comes down must go up.” Strangers and police are greeted with caution. They leave trails of little “tracts” for other explorers, sometimes signed with fantastical pseudonyms. Community norms frown on selling anything down there; money has no place in the catacomb economy. Instead, explorers share beer, canned food or maps. If someone falls and smashes a sculpture, others quietly restore it.

Storming the Cellars: Crime and the Unexpected

Not all who know the catacombs use them for art or exploration. During World War II, retreating Germans fortified tunnels and built bunkers; decades later, in 2004, police stumbled into an elaborate underground cinema complete with projector and bar during a routine drill³³.

More recently, thieves exploited the very secrecy of the tunnels. In August 2017, French media called it a “heist of the century”: gangsters drilled from the catacombs into a private apartment’s cellar in the city’s chic 6th arrondissement, making off with over €250,000 of vintage wine³⁴. Investigators told reporters the suspects must have scouted the spot beforehand; the wall was chosen deliberately to tunnel 20 meters up into the apartment³⁵. These crooks, police said, benefited from the catacombs’ anonymity since most of the network is unsupervised, they likely knew exactly where to dig³⁶.

That wine heist serves as a dark testament: no one is watching down there most of the time. “If caught, trespassers face a small fine,” reported an Independent feature, “though it is mostly tolerated by locals”³⁷.

The Perils of the Pitch-Black

Perhaps the most serious caveat in all these stories: nobody has ever done it without risk. The catacombs are a labyrinth of hazards, literal and metaphorical. Hundreds of miles of tunnels are unmapped and unlit, often flooded knee-deep. The ambient temperature down there hovers around 15°C (60°F)⁴⁰, but cold seeps in when you stand still. Without GPS or cell service, even a short stroll can turn fatal. As one cataphile source warned of the unknown tunnels, “collapses and floods are not unknown”¹⁸.

The tale of Philibert Aspairt reminds us how real this is. In November 1793, an ordinary doorman at the Val-de-Grâce hospital in Paris walked into the catacombs through a courtyard stairwell⁴². He vanished. Eleven years later, his body was found just a few feet from an exit stair, skeletal and clutching his key ring⁴³. In darkened cellars he had apparently lost his light, become disoriented, and died slowly of starvation or exposure. His isolated grave in the catacombs bears a simple epitaph: “Here lies Philibert Aspairt, lost November 3, 1793, and found after eleven years…”⁴⁵

Modern tragedies are rarer (only because far fewer people go alone), but they do happen. In 2017, two teenage boys followed a staircase off the public route and wandered into the illegal tunnels; they spent three days lost underground before firemen and search dogs finally found them, near hypothermia⁴⁶⁴⁷.

Local lore reminds would-be adventurers of Aspairt with simple advice: “Never go in alone. It is illegal and dangerous. You don’t want to end up like Philibert”⁴.

So, who really enters these forbidden passages, and why? To the cataphiles, it’s not just thrill-seeking. It’s a mix of worship and rebellion. The catacombs are an ultimate counterculture space, free in spirit if not law. They argue that by mapping the quarries and quietly patrolling for hazards, they are even preserving a piece of Paris history that no one above ground sees. Skeptics, however, see more danger than romance.

Critics point out the darker side: in breaking the 1955 decree, cataphiles flaunt the law and imperil not just themselves but unseen others. After each unauthorized party, city officials quietly inspect and re-seal the holes, a chore that grows with each prank. The underside of romance is that the catacombs remain, fundamentally, a graveyard. Wandering between bones of real Parisians (some whose names would have been forgotten) can be uncanny.

“Is it safe to explore Paris Catacombs?” The blunt answer: no. Between legal jeopardy and physical hazard, the venture is reckless. Yet illicit exploration won’t vanish as long as the tunnels do. For now, the catacombs remain a subterranean mirror of modern society: at once romanticized and forbidden, coveted and feared. Those who descend do so at their own grave risk, in search of a secret that’s always been there, just a manhole cover away.

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