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Though I was sceptical at first
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Secrets of the Underground

Though I was sceptical at first, our findings got me excited thatmaybe the inmates of...

Though I was sceptical at first, our findings got me excited that
maybe the inmates of Alcatraz really did know something we don't

Full Transcript

00:00:01.000 --> 00:00:02.088
Though I was sceptical at first,
00:00:02.096 --> 00:00:06.008
our findings got me excited that maybe the inmates of Alcatraz
00:00:06.016 --> 00:00:08.056
really did know something we don't.
Duration
9 seconds
Views
14
Timestamp in Movie
00:21:22
Uploaded
Jul 10, 2025
Season
1
Episode
8
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 • E02 ..not just dirt, we've got a ceiling made of wood, - Secrets of the Underground 00:09
..not just dirt, we've got a ceiling made of wood,
S01 • E01 We're going up inside... inside the ceiling. - Secrets of the Underground 00:05
We're going up inside... inside the ceiling.
S01 • E07 There are smaller, Satellite ones around the area. - Secrets of the Underground 00:05
There are smaller, Satellite ones around the area.
S01 • E03 This right here is the little section of water that remains of this lake, - Secrets of the Underground 00:07
This right here is the little section of water that remains ...
S01 • E08 That they had built a secret network of escape tunnels - Secrets of the Underground 00:07
That they had built a secret network of escape tunnels
S01 • E01 From downstairs up, up, up, up, up, - Secrets of the Underground 00:07
From downstairs up, up, up, up, up,
S01 • E07 Aren't the prelude to another Supervolcanic eruptions, - Secrets of the Underground 00:07
Aren't the prelude to another Supervolcanic eruptions,
S01 • E02 I think if we removed this door, it would collapse for sure. - Secrets of the Underground 00:05
I think if we removed this door, it would collapse for sure.
S01 • E03 It's almost hard to imagine that 80ft over our head - Secrets of the Underground 00:08
It's almost hard to imagine that 80ft over our head
S01 • E08 But it appears there was no way out underground after all. - Secrets of the Underground 00:04
But it appears there was no way out underground after all.
S01 • E01 He was said to stand around 5'10" and weigh as much as 260lbs. - Secrets of the Underground 00:05
He was said to stand around 5'10" and weigh as muc...
S01 • E08 So that must be why the only prisoners ever to escape from The Rock - Secrets of the Underground 00:07
So that must be why the only prisoners ever to escape from T...
S01 • E07 Because as we've seen, - Secrets of the Underground 00:05
Because as we've seen,
S01 • E02 It's filled in with cobblestone and sandy dirt, - Secrets of the Underground 00:08
It's filled in with cobblestone and sandy dirt,
S01 • E03 This is like basically at the bottom of where the old lake was. - Secrets of the Underground 00:06
This is like basically at the bottom of where the old lake w...
S01 • E01 It would have been especially tight for someone the size of Capone, - Secrets of the Underground 00:07
It would have been especially tight for someone the size of ...
S01 • E08 In 1962, three inmates dug through their cell walls with sharpened spoons - Secrets of the Underground 00:13
In 1962, three inmates dug through their cell walls with sha...
S01 • E03 What makes this puzzle even weirder - Secrets of the Underground 00:07
What makes this puzzle even weirder
S01 • E01 We've got stairs right there, - Secrets of the Underground 00:12
We've got stairs right there,
S01 • E07 In superheated ground water, Toxic-gas emissions, - Secrets of the Underground 00:08
In superheated ground water, Toxic-gas emissions,