Underground Marvels - Season 1 - Eps 8: Ghosts of the Hell Maze
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
Title: Underground Marvels
First Air Date: 2019-10-17
Last Air Date: 2021-10-07
Status: Returning Series
Rating: 6/10 (from 1 votes)
Language: EN
Seasons: 2
Total Episodes: 20
Network: Science U&Yesterday
Genres: Documentary
Production Companies: Phoenix Television, TCB Media Rights
Synopsis
Historians, engineers, and experts take a look at the underground structures, systems, and phenomena that exist beneath our feet.
