This film follows a team of experts as it excavates a famous WW1 battlefield in search of a top secret tunnel and a legendary 60-foot flame-thrower. Built for use during the opening day of the bloodiest clash of WW1, this weapon fired a blast of flaming oil over 100 yards long. Historian Peter Barton hopes to recover the machine and with help from British Royal Engineers, build a working replica.

• DirectorDavid W. Brady
• Release1 January 2012
• Genre
  Documentary / History
• Duration1h 34m
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• Productions

  BBC