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A five-part series that explores the forgotten story of the incredible engineering feats and secret survival techniques of five legendary battles fought underground during World War I.
Release date: 2014-08-10
Orginal language: English
Andy Hawkins - Archaeologist, Julia Richardson - Archaeologist
Stefano De Pieri - Cinematography, Paul Russell - Director, Andrea Vogt - Series Writer, Paul Russell - Series Writer, Andrea Vogt - Producer