Mines of Paris, Underground quarry network in Paris, France
The Mines of Paris form an extensive underground network of stone galleries created by centuries of quarrying beneath the city. These passages developed as workers extracted limestone and gypsum that built much of the urban landscape above.
Paris grew by extracting stone from beneath its streets for centuries, but repeated collapses became dangerous. In 1777, King Louis XVI established an official inspection service to map and reinforce the unstable network.
Local names for sections of the tunnels developed over centuries as workers and explorers navigated the passages below. These informal labels show how people have understood and shared knowledge about this hidden world beneath their city.
The underground network remains closed to the public since 1955 for safety reasons, except for the official Catacombs section that operates as a museum. Visitors interested in exploring this world should plan to visit only the authorized area with proper access.
Two distinct quarry systems exist beneath Paris rather than one unified network. The larger system served the southern districts while a separate smaller one developed beneath the 13th district, showing how different parts of the city drew resources from different depths.
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