
Underground Paris's secret life —
The remains of more than six million people are buried in a vast network of tunnels below Paris, France. People who call themselves 'cataphiles' visit the catacombs illegally and occasionally hold underground parties.

Underground Paris's secret life —
Skulls and bones are arranged to form the walls of the tunnels in the Paris Catacombs. Circa 1900.

Underground Paris's secret life —
Bones from the Saints-Innocents cemetery were moved to the catacombs after the cemetery began overflowing with remains.

Underground Paris's secret life —
Parts of the catacomb network date back to medieval times.

Underground Paris's secret life —
These subterranean quarries that make up the catacombs had been used to store the remains of generations of Parisians in a bid to cope with the overcrowding of Paris' cemeteries at the end of the 18th century.

Underground Paris's secret life —
A pile of bones and skulls sits in the Paris Catacombs. Circa 1935