At Messines in Belgium, bomb disposal specialists work alongside archaeologis...
WWI's Tunnels of Death: The Big Dig
Season 1 Episode 2: Earthquaking the Ridge
By 1917 German troops had been facing the British in trenches at Messines for almost three years. Archaeologists discover German tunnels - evidence of an underground war. A camera is lowered down a flooded German mineshaft to looking for...