[mdoyle]

The History Channel runs a very interesting episode about the escape effort. The attention to detail in all their efforts impressed me most, to think those guys were able to do what they did with the limited means they had is amazing.

Most of the forged documents used homemade ink and modified nails to create impressions in the paper so they appeared to be typed. The tunnels used bed slats to support the roofs and a ventilation system made from old soup cans.