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And between the scan of the yard
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Secrets of the Underground

And between the scan of the yard and the large anomalydetected behind the wall, I'm...

And between the scan of the yard and the large anomaly
detected behind the wall, I'm starting to think
there may be some truth to those long-held rumours after all

Full Transcript

00:00:01.000 --> 00:00:02.072
And between the scan of the yard
00:00:02.799 --> 00:00:05.008
and the large anomaly detected behind the wall,
00:00:05.016 --> 00:00:07.048
I'm starting to think there may be some truth
00:00:07.559 --> 00:00:10.064
to those long-held rumours after all.
Duration
11 seconds
Views
14
Timestamp in Movie
00:17:09
Uploaded
Jul 12, 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 • E01 It's said that when cops raided the joint, - Secrets of the Underground 00:08
It's said that when cops raided the joint,
S01 • E03 ..when you start to look at those kinds of outcomes... Right. - Secrets of the Underground 00:04
..when you start to look at those kinds of outcomes... Right...
S01 • E03 ..then the chances of this being a random accident - Secrets of the Underground 00:09
..then the chances of this being a random accident
S01 • E08 But as exciting as these results are, they aren't conclusive. - Secrets of the Underground 00:05
But as exciting as these results are, they aren't concl...
S01 • E01 From there he could slip into various buildings connected to the tunnels - Secrets of the Underground 00:07
From there he could slip into various buildings connected to...
S01 • E08 We now know there are air gaps under the rec yard - Secrets of the Underground 00:06
We now know there are air gaps under the rec yard
S01 • E08 But the GPR data didn't give us enough detail - Secrets of the Underground 00:06
But the GPR data didn't give us enough detail
S01 • E01 It may sound like the stuff of Hollywood movies, - Secrets of the Underground 00:09
It may sound like the stuff of Hollywood movies,
S01 • E03 Physical evidence of a mass murder in Pennsylvania - Secrets of the Underground 00:08
Physical evidence of a mass murder in Pennsylvania
S01 • E02 (DEEPER THUDDING SOUNDS) - Secrets of the Underground 00:07
(DEEPER THUDDING SOUNDS)
S01 • E08 So, I've got to find some other way at peering underneath Alcatraz - Secrets of the Underground 00:09
So, I've got to find some other way at peering undernea...
S01 • E01 Since ancient times, catacombs in Rome and Paris - Secrets of the Underground 00:10
Since ancient times, catacombs in Rome and Paris
S01 • E07 From this vantage point, - Secrets of the Underground 00:04
From this vantage point,
S01 • E02 I want to know if the tunnel we're in continues beyond this wall - Secrets of the Underground 00:06
I want to know if the tunnel we're in continues beyond ...
S01 • E08 While digging for new research about Alcatraz, - Secrets of the Underground 00:08
While digging for new research about Alcatraz,
S01 • E07 Over the last 20 years or so. - Secrets of the Underground 00:04
Over the last 20 years or so.
S01 • E02 Because if it does, that could lend credence to the rumours - Secrets of the Underground 00:07
Because if it does, that could lend credence to the rumours
S01 • E01 And even in our time, infamous Mexican drug lord El Chapo Guzman - Secrets of the Underground 00:12
And even in our time, infamous Mexican drug lord El Chapo Gu...
S01 • E07 Insar, or interferometric Synthetic aperture radar, - Secrets of the Underground 00:08
Insar, or interferometric Synthetic aperture radar,
S01 • E08 Peter has been using cutting-edge technology - Secrets of the Underground 00:07
Peter has been using cutting-edge technology