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The Berlin Wall was actually constructed of two walls with an area in between that was filled with watchtowers, anti-vehicle trenches, guard dog runs, in effect it was a killing zone, much like we might say the area between the concentric walls of a medieval castle
Full Transcript
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The Berlin Wall was actually constructed of two walls
00:00:04.996 --> 00:00:05.496
with an area in between
00:00:05.496 --> 00:00:10.132
that was filled with watchtowers, anti-vehicle trenches,
00:00:10.132 --> 00:00:11.859
guard dog runs,
00:00:11.859 --> 00:00:13.639
in effect it was a killing zone,
00:00:13.639 --> 00:00:15.015
much like we might say
00:00:15.015 --> 00:00:18.682
the area between the concentric walls of a medieval castle.
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Movie Summary
A fascinating look at how modern day structures and engineering technologies have been inspired by ancient discoveries.