No kidding. As kids, we played The Great Escape for just about a whole summer. Even hand dug a trench 20' , covered it with scrap plywood & dirt, put a plywood floor in it then put skate board wheels on a board so we could be pulled through it with a rope. Even had candles on shelves for lighting, then once through the tunnel it was on to the motorcycles(spyder style bikes with banana seats) and pedalled a fast as we could over the BIG JUMP under a nearby treehouse that doubled as a Guard Tower.
It was a great movie that sparked real live imagination in kids. I wonder how many kids today actually spent their entire summer roaming about their neighborhood, camping out, building forts, riding bikes and shooting bb guns? Sad ain't it? Oh and this forbidding looking fence would have been a challenge to us urchins back then...we would have to sneak in and investigate what was on the other side