This fascinating series unearths the story about how the Great War went on underground.
For three years the Germans and French blew each other up with massive explosions, using a maze of underground galleries and tunnels. The whole story is told through the preserved diaries of Herman Hoppe, a German engineer who built many of the tunnels.
Battle Castle Series
You can find a full index and overview of The Great Underground War here.
Production & Filming Details
- Release Date: 24 August 2014.
- Running Time: 45 minutes.
- Rating: Unknown.
- Country: UK.
- Language: English and German.