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If inmates burrowed underneath it, their trail would have started here
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Secrets of the Underground

If inmates burrowed underneath it,their trail would have started here

If inmates burrowed underneath it,
their trail would have started here

Full Transcript

00:00:01.000 --> 00:00:05.004
If inmates burrowed underneath it, their trail would have started here.
Duration
5 seconds
Views
27
Timestamp in Movie
00:09:13
Uploaded
Jul 09, 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 There are rumours of a labyrinth leading to and from - Secrets of the Underground 00:07
There are rumours of a labyrinth leading to and from
S01 • E01 GPR confirms it. There's empty space behind these two portals. - Secrets of the Underground 00:05
GPR confirms it. There's empty space behind these two p...
S01 • E01 That means that if Capone escaped through these sewer tunnels, - Secrets of the Underground 00:09
That means that if Capone escaped through these sewer tunnel...
S01 • E07 In fact, that build-up Of pressure in the helium. - Secrets of the Underground 00:04
In fact, that build-up Of pressure in the helium.
S01 • E03 I'm exploring a stretch of woods known as Duffy's Cut, - Secrets of the Underground 00:09
I'm exploring a stretch of woods known as Duffy's ...
S01 • E02 Could these also be connected to the theories surrounding the airport? - Secrets of the Underground 00:05
Could these also be connected to the theories surrounding th...
S01 • E08 The rec yard is back that way - Secrets of the Underground 00:07
The rec yard is back that way
S01 • E01 So all he had to do was walk down from the lobby, like I did, - Secrets of the Underground 00:07
So all he had to do was walk down from the lobby, like I did...
S01 • E02 And perhaps even a network of subterranean super-bunkers? - Secrets of the Underground 00:05
And perhaps even a network of subterranean super-bunkers?
S01 • E07 I think we can say, Without much doubt, - Secrets of the Underground 00:05
I think we can say, Without much doubt,
S01 • E03 So far, a team of historians and scientists - Secrets of the Underground 00:11
So far, a team of historians and scientists
S01 • E08 All right, ready to get this powered up? Yep. - Secrets of the Underground 00:04
All right, ready to get this powered up? Yep.
S01 • E02 I'm gonna run a pair of high-tech experiments there - Secrets of the Underground 00:06
I'm gonna run a pair of high-tech experiments there
S01 • E08 Stefan and I are using a type of GPR - Secrets of the Underground 00:06
Stefan and I are using a type of GPR
S01 • E01 While Capone may have liked doing business at the Seelbach - Secrets of the Underground 00:12
While Capone may have liked doing business at the Seelbach
S01 • E02 How is there no map of the tunnel system here? - Secrets of the Underground 00:04
How is there no map of the tunnel system here?
S01 • E03 Geophysicist Tim Bechtel suspects that in the 1870s, - Secrets of the Underground 00:11
Geophysicist Tim Bechtel suspects that in the 1870s,
S01 • E07 Or is it the tip Of a supervolcanic iceberg? - Secrets of the Underground 00:04
Or is it the tip Of a supervolcanic iceberg?
S01 • E02 I'll travel to the Buckeye State - Secrets of the Underground 00:07
I'll travel to the Buckeye State
S01 • E08 It will tell us if there are any changes in depth - Secrets of the Underground 00:07
It will tell us if there are any changes in depth