Sci. Ch. - Underground Marvels Series 1 (2019) Part 8 Ghosts of the Hell Maze

Underground Marvels Series 1 Part 8 Ghosts of the Hell Maze

A labyrinth of vast tunnels in the French countryside has served as a secret hideout during wartime for centuries, and on its walls, experts have discovered the final confessions of soldiers who fought here during one of the deadliest days of World War I.

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