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Why else would they put
a big, thick wall between
the waterwheel and the metal machine? This whole thing was
set up, um, as a process,
one of the 17 steps
to make gunpowder
a big, thick wall between
the waterwheel and the metal machine? This whole thing was
set up, um, as a process,
one of the 17 steps
to make gunpowder
Full Transcript
00:00:01.000 --> 00:00:04.433
Why else would they put
a big, thick wall between
the waterwheel
00:00:04.433 --> 00:00:05.933
and the metal machine?
00:00:07.000 --> 00:00:09.004
This whole thing was
set up, um,
00:00:09.004 --> 00:00:13.005
as a process,
one of the 17 steps
to make gunpowder.
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Movie Summary
The world's most incredible engineering projects are revisited to uncover why places full of mysteries and untold secrets are now abandoned ruins.