The War Illustrated, Volume 3, No. 64, Page 541, November 22, 1940.

When tanks are on manoeuvres they do not look for easy ways or smooth going, but seek out every obstacle likely to make their course a hard one. Here heavy Infantry Tanks Mark 2, weighing 25 tons apiece, seen during exercises in the Northern Command. Their powers of progression over rough ground are being fully tested as they plough across the stony, waterlogged floor of a disused quarry. Photo, G.P.U.