Due to the very steep climb, once the cave is passed, over rocks with places where even steel handrails had to be placed, this walk cannot be classified as “easy for every walker”.
Remains of mills on the banks of the Gardon. The vault-shaped one (the Moulin de la barque inverted) was designed to withstand the flooding of the river. The Moulin de la Rasclause, on the other bank, was a fortified mill.
The ascent after the tunnel is very steep, partly with stairs and iron handles. The tunnel is pitch black, the tunnel floor is uneven and the tunnel meanders.