In the spring of 1943, Squadron Leader Roger Bushell RAF conceived a plan for a major escape from the camp, which occurred the night of 24–25 March 1944 - known as The Great Escape.
The Stalag Luft 3 was a Lufftwaffe run prisoner of war camp in Poland
Martin Cross takes us on a personal walkthrough of the tunnels, named Tom, Dick and Harry.
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Find out what to expect from the weather if you are running in the big race in London or watching from the sidelines.
It will be a soggy start to the weekend and temperatures will drop making it feel colder than in recent days.