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It had its own
heating, ventilation, And air conditioning
heating, ventilation, And air conditioning
Full Transcript
00:00:01.000 --> 00:00:03.868
It had its own
heating, ventilation,
00:00:03.087 --> 00:00:05.269
And air conditioning.
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Movie Summary
An examination of hidden structures built by the Nazis, from tunnels to towers, artillery sites, resistance nests, and communication centres.