THE LAST NAZI SECRET - TUNNEL SYSTEM KIES, WAS IT SOMETHING ELSE?!

I have never seen a tunnel layout such as this, and when evaluating the main ball-baring raids new questions arises. Was this really what it was or just the beginning of a darker story hidden behind deliberate collapses.
Something is not making sense, Take a look for yourself and judge. But it is an amazing tunnel system, only an hrs drive from the SIII in Jonastal, and built with a speed even the Project Reise architects would be envious off, yet seemingly not even urgently needed, so what was this really all about?

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