The 22nd Battalion moved to Romarin and then via Light Railway to a system of dug-outs called the Catacombs just behind Ploegsteert Wood. These catacombs were an underground dug-out city, large enough to comfortably house a couple of thousand men, consisting of great timbered drives and tunnels into the side of Hill 63. In galleries driven at right-angles off the main passages, long rows of wooden bunks were erected. The place was electrically lighted and though the atmosphere was a little stuffy, troops fresh from the line were very appreciative of the solid comfort of a good dry bed. [Photograph of the 6th Brigade in the Catacombs].