Folks , I don't know whether the public has access to these secret WW II tunnels even now ?
Regards
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Sidhartha,
Hitler and the Germans could not have built such an extensive system of tunnels, secretly, in such a short period of time. They must have embellished something that had already existed.
Cheers!
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Yes @deandddd , they probably exploited natural underground cavern networks to build their own tunnel system . This site was most likely the precursor to the DUMBs that began to be constructed following WW II .
Regards