The French camps
The French forces set up camp on the south-facing slopes of the valleys, offering shelter from Germany artillery fire. All along the Biesme valley, and only about a mile south of the front line, you can still see the tiered foundations of the rudimentary buildings which served as barracks for the poilus. As of yet these front-line buildings have not been the subject of archaeological excavations.
The camps were connected to the front by a series of tunnels, which provided a reasonable amount of cover for the French soldiers as they made their way up to the trenches. Dotted along these tunnels are traces of numerous ammunition depots.