A group called “cataphiles” have been exploring the nether regions of this place since entering the quarries became illegal in 1955. They’ve found their way down through storm drains, manholes, and secret doorways along Rue Bonaparte. Some cataphiles had built private clubhouses within the limestone walls; others hosted weekly subterranean dance clubs. There was a rumor that a French billionaire chiseled out his own lavish apartment down there and hosted private parties, where guests do who-knows-what. Cataphiles made new discoveries all the time.
