The Great Underground War (2014): S01E02 – The Secret of the Somme


This fascinating series unearths the story about how the Great War went on underground.


An exploration of newly discovered fortresses, dugouts and bunkers tells the story of the innovative German engineering that made defences resistant to massive bombardments.

Battle Castle Series

You can find a full index and overview of The Great Underground War here.

Production & Filming Details

  • Release Date: 17 August 2014.
  • Running Time: 45 minutes.
  • Rating: Unknown.
  • Country: UK.
  • Language: English and German.

Video Link

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