urban caver olrik writing on concrete wall of a utility tunnel with a carbide lamp (paris), acetylene, catacombs of paris, cave, caving, gallery, graffiti, p3200tmz, safety helmet, shadow, spelunking, tag, tmax, trespassing, underground quarry, urban exploration

urban caver olrik writing on concrete wall of a utility tunnel with a carbide lamp (paris)

Urban caver Olrik writing on concrete wall of a utility tunnel with a carbide lamp.­

The flame of the acetylene gas from the lamp deposits black suit (carbon) on the wall.­ This is more environmentally-friendly than using spray paint to make graffiti.­

Catacombs of Paris (off-limit area), about 20 meters (60 feet) underground, under Paris city center.­

This is a part of the 200 Km network of ancient tunnels not opened to the public, but regularly visited by trespassing urban cavers called "cataphiles".­ See more information in the description of the photo album.