A government nuclear bunker in the former East Germany, undetectable during the Cold War, was sealed with concrete after the fall of the Berlin Wall. Now it's open to the public for a short time.
http://vdt.dw-world.de/index.php?v=e...=0&f=FlashHigh
http://vdt.dw-world.de/index.php?v=e...=0&f=FlashHigh
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