Secret weapon of the SommeEbullient presenter Tony Robinson and a team of experts travel to a famous World War 1 battlefield in northern France to search for a top secret tunnel and a 60-foot flame thrower lost for almost a century. Built for use during the opening day of the Battle of the Somme, the bloodiest clash of WW1, this giant weapon of terror fired a blast of flaming oil over 100 yards. With historian Peter Barton, and archaeologist Tony Pollard, Robinson hopes to recover the machine and, with the help of British Royal Engineers, build a working replica and get the fire breathing mechanical dragon to roar once more.