National Geographic Documentaries

Secrets Of The Great Escape Revealed (2014x30)

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For nearly 70 years, the tunnel allowing 76 allied airmen to flee from a POW camp in Poland has remained undisturbed. Now a crack team of engineers and historians are out to reveal its hidden secrets. A crack team of engineers and historians continue to unravel the secrets hidden in the tunnel that allowed 76 allied airmen to flee from a WWII POW camp in Poland.