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Some sections ran across mountain ranges, angles as steep as 70 degrees, before plunging down into deep valleys
Full Transcript
00:00:01.000 --> 00:00:03.099
Some sections ran across mountain ranges,
00:00:03.099 --> 00:00:06.074
angles as steep as 70 degrees,
00:00:06.074 --> 00:00:10.022
before plunging down into deep valleys.
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Movie Summary
A fascinating look at how modern day structures and engineering technologies have been inspired by ancient discoveries.