The walls of the tunnel system are absolutely smothered in graffiti written by Britishicon & Dominion troops, but as mentioned when I started the thread a disproportionate amount seems to be Canadianicon. I don't know but it's likely that Canadian units must have been billeted in the vicinity when not in the line. (Or do you guys just like writing on walls?!?) The village is three or four miles behind the front line as it would have been in late summer/early autumn 1916. There are dates shown with a few, the ones I noticed being around August to October 1916, IIRC. At around this time the Canadian infantry were sustaining heavy losses, but gaining many plaudits for their success, in the taking of Courcelette, Destremont Farm, Regina Trench & thereabouts.