In their latest outing for the street art institution, 12 Oz. Prophet, the shadowy group known as The Grifters get deep inside the Catacombs of Paris, which is an ossuary filled with the bones of dead Parisians dating all the way back to the days of the Roman Empire. While parts of this subterranean labyrinth has been open to the public for a couple hundred years, the Grifters have gone rogue and documented a romp around parts normally closed off from public view.