Meet the Berlin Wall tunnel digger saved by Stasi 'hero' To save his friends and reunite his family, Boris Franzke dug seven tunnels from West Berlin to East Berlin: a risky project in the face of Stasi control. It was only thanks to a member of the latter that Boris Franzke escaped death. Thirty years on after the joyous fall of the Wall, Boris Franzke, now 80, recalls his hair-raising, subterranean adventures between the communist east and the capitalist west -- once with the unlikeliest of allies. IMAGES AND SOUNDBITES