S3, E2: Vimy Ridge is Canada's most known WW1 battle. The War Junk team quickly discovers that there is more to the battlefield than the trenches and craters that scar the land. The fighting at Vimy Ridge also went below ground. The Team gets an unprecedented opportunity to explore deeper and further into the underground tunnel system than any TV crew has been allowed to go before. What will they uncover over 100 feet below the surface in the deep fighting tunnels under Vimy Ridge?