Underground Marvels — Season 1, Episode 8: Ghosts of the Hell Maze
Documentary • 45 min • 2 seasons, 20 episodes • ★ 6.5/10
Episode synopsis
A labyrinth of tunnels in the French countryside has served as a secret hideout during wartime for centuries. On its walls, experts have discovered the final confessions of soldiers who fought here during one of the deadliest days of World War I.
About Underground Marvels
Historians, engineers, and experts take a look at the underground structures, systems, and phenomena that exist beneath our feet.