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It looks to me like this was a much bigger cave
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Secrets of the Underground

It looks to me likethis was a much bigger cave, and that they put brick up,and filled it...

It looks to me like
this was a much bigger cave, and that they put brick up,
and filled it in

Full Transcript

00:00:01.000 --> 00:00:04.064
It looks to me like this was a much bigger cave,
00:00:04.072 --> 00:00:09.092
and that they put brick up, and filled it in.
Duration
10 seconds
Views
15
Timestamp in Movie
00:04:51
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 • 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
S01 • E02 The artist Leo Tanguma says airport officials gave him - Secrets of the Underground 00:10
The artist Leo Tanguma says airport officials gave him
S01 • E01 Really? So when Al Capone was alive, - Secrets of the Underground 00:08
Really? So when Al Capone was alive,
S01 • E03 To help us search for new clues, - Secrets of the Underground 00:08
To help us search for new clues,
S01 • E08 Three were killed in the process and two more were later executed. - Secrets of the Underground 00:06
Three were killed in the process and two more were later exe...
S01 • E01 So this is really awesome - Secrets of the Underground 00:11
So this is really awesome
S01 • E02 There's a big gargoyle here behind me - Secrets of the Underground 00:07
There's a big gargoyle here behind me
S01 • E03 The three made a stunning discovery here a few years back - Secrets of the Underground 00:09
The three made a stunning discovery here a few years back
S01 • E08 But their failure didn't extinguish - Secrets of the Underground 00:06
But their failure didn't extinguish
S01 • E08 Shortly after this cellblock was built, - Secrets of the Underground 00:12
Shortly after this cellblock was built,