Underground wall on Rhône bridge

Description

Under the road of the bridge across the river "Le Rhône" there's a big wall of 400 meters.
Policemen come sometimes but let us quite. They prefeir see us here ;)
It's a quite place, and few times in a day we can see tourists with bicycle (it's one of touristic bicycle way)
There's not light on night and if you can put your car on bottom of the bridge, you can't go with it on.
Have Fun