A Three-Day Expedition To Walk Across Paris Entirely Underground
To wander through the catacombs is to feel yourself inside of a mystery novel, full of false walls and trapdoors and secret chutes, each leading to another hidden chamber, containing another surprise. Down one passageway, you might find a chamber containing a sprawling Boschian mural that cataphiles had been gradually embellishing for decades; down another, you might see a life-size sculpture of a man half inside a stone wall, as though stepping in from the beyond; down yet another, you might encounter a place that upends your very sense of reality. In 2004, a squadron of cataflics on patrol in the quarries broke through a false wall, entered a large, cavernous space, and blinked in disbelief. It was a movie theater. A group of cataphiles had installed stone-carved seating for twenty people, a large screen, and a projector, along with at least three phone lines. Adjacent to the screening room were a bar, lounge, workshop, and small dining room. Three days later, when the police returned to investigate, they found the equipment dismantled, the space bare, except for a note: “Do not try to find us.”
via https://longreads.com/2019/03/13/a-three-day-expedition-to-walk-across-paris-entirely-underground/