Jess — “My mate’s quite into his caving and archaeology; I’m more down the layout and aesthetic side of things… I was thinking I might wanna recreate them in a mural – maybe a rough map of sections intertwined with scrolls of its history and sketches of some rooms or features. Anyhow we were just wondering whether you had any information on less traditional entrances to the catacombs than the Denfert-Rochereau one.”
In 2009, the Catecombes of Paris were vandalized. Since then, the secret entries have become more secure.
Paris’ Secret Underworld from 2004 has more information.
More details on Paris under ground and the Capuchin Quarries.