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Over the years, they have built walls and concrete
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Secrets of the Underground

Over the years, they have builtwalls and concrete and so forth,with utility companies, and...

Over the years, they have built
walls and concrete and so forth,
with utility companies, and you never know
what's over the last one

Full Transcript

00:00:01.000 --> 00:00:05.064
Over the years, they have built walls and concrete
00:00:05.072 --> 00:00:08.012
and so forth, with utility companies,
00:00:08.002 --> 00:00:10.044
and you never know what's over the last one.
Duration
10 seconds
Views
22
Timestamp in Movie
00:04:30
Uploaded
Jul 09, 2025
Season
1
Episode
1
Genres
documentary

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Movie Summary

Using cutting-edge technologies such as ground penetrating radar (GPR), LIDAR (Light Detection and Ranging), and 3-D imaging, scientists research fascinating underworlds of secret tunnel networks, ancient structures, and bizarre g...
S01 • E08 One bed, a place to wash your hands, a place to use the toilet. - Secrets of the Underground 00:05
One bed, a place to wash your hands, a place to use the toil...
S01 • E02 So where did all this dirt come from and what's there now? - Secrets of the Underground 00:04
So where did all this dirt come from and what's there n...
S01 • E08 If I was in a room like this - Secrets of the Underground 00:09
If I was in a room like this
S01 • E03 Yet strangely, even though the confidential company files reveal - Secrets of the Underground 00:13
Yet strangely, even though the confidential company files re...
S01 • E02 I decide to investigate on my own - Secrets of the Underground 00:07
I decide to investigate on my own
S01 • E01 Oh! This is cool. - Secrets of the Underground 00:05
Oh! This is cool.
S01 • E08 One of the most notorious breakout attempts was in May 1946, - Secrets of the Underground 00:10
One of the most notorious breakout attempts was in May 1946,
S01 • E02 And right away, I'm struck by the peculiar symbols - Secrets of the Underground 00:06
And right away, I'm struck by the peculiar symbols
S01 • E01 It looks to me like this was a much bigger cave, - Secrets of the Underground 00:10
It looks to me like this was a much bigger cave,
S01 • E03 If disease was to blame, why were so many of the deaths kept secret? - Secrets of the Underground 00:05
If disease was to blame, why were so many of the deaths kept...
S01 • E02 There's, like, a whole bunch of things here at the airport that are really odd. - Secrets of the Underground 00:05
There's, like, a whole bunch of things here at the airp...
S01 • E08 It was dubbed "the Battle of Alcatraz". - Secrets of the Underground 00:04
It was dubbed "the Battle of Alcatraz".
S01 • E02 Exhibit A, a series of giant murals - Secrets of the Underground 00:08
Exhibit A, a series of giant murals
S01 • E03 So, this particular document points to 57 people dying here, - Secrets of the Underground 00:08
So, this particular document points to 57 people dying here,
S01 • E08 If you look at the walls, those are all scars...shrapnel, - Secrets of the Underground 00:09
If you look at the walls, those are all scars...shrapnel,
S01 • E01 Whoa. What is this? - Secrets of the Underground 00:04
Whoa. What is this?
S01 • E01 I think those are utility pipes - Secrets of the Underground 00:07
I think those are utility pipes
S01 • E03 Where are they and why would they have tried to cover up this incident? - Secrets of the Underground 00:05
Where are they and why would they have tried to cover up thi...
S01 • E02 Some of this symbolism really is kind of weird. - Secrets of the Underground 00:04
Some of this symbolism really is kind of weird.
S01 • E08 The uprising was so well executed - Secrets of the Underground 00:07
The uprising was so well executed