Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Uploaded on Dec 9, 2008
It has been said that there were once more than 600km of galleries that stretched under the streets of Paris. One can find stone mining remains from Roman and medieval times at the surface level. To find the best deposits formed by harder rocks, the mining descended from the surface deep underground, to slowly extend, from gallery to gallery, an anarchic network of access tunnels.