Explore “The Souterrain,” and get a unique, personal view of what Canadian soldiers experienced immediately before they stepped into one of the most pivotal battles of World War One. Sheltered in a cavern, forty feet below ground preparing to meet the enemy, many soldiers carved names and messages into the limestone walls. With the help of Elaine Quigley, a forensic graphologist who often works with Scotland Yard, we discover who many of these soldiers were. Alec Ambler, takes us on the trip of a lifetime: what he discovers under the battlefield of Vimy connects him to a father he never fully knew till now.