Located in the Harz Mountains of Germany, some 160 miles [260 km] southwest of Berlin, the factory complex wove its way through 10 miles [20 km] of huge galleries dug into the base of a hill.
Berlokasi di Pegunungan Harz, Jerman, kira - kira 260 kilometer sebelah barat daya kota Berlin, kompleks pabrik itu melewati lorong - lorong besar yang berliku - liku sepanjang 20 kilometer yang digali di dasar sebuah bukit.