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It seems clear that at some point
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Secrets of the Underground

It seems clear that at some point this part of the hotelwas reconstructed, perhaps...

It seems clear that at some point this part of the hotel
was reconstructed, perhaps inadvertently covering
Capone's infamous tracks

Full Transcript

00:00:01.000 --> 00:00:03.000
It seems clear that at some point
00:00:03.008 --> 00:00:06.002
this part of the hotel was reconstructed,
00:00:06.028 --> 00:00:09.044
perhaps inadvertently covering Capone's infamous tracks.
Duration
9 seconds
Views
13
Timestamp in Movie
00:16:51
Uploaded
Jul 13, 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 • E02 Just under where Stefan is standing, the tunnel ends at a wall. - Secrets of the Underground 00:05
Just under where Stefan is standing, the tunnel ends at a wa...
S01 • E03 ..the bone actually doesn't fracture or fall apart, it distorts. - Secrets of the Underground 00:06
..the bone actually doesn't fracture or fall apart, it ...
S01 • E07 Is just a small fraction Of that, - Secrets of the Underground 00:05
Is just a small fraction Of that,
S01 • E08 I came to Alcatraz very sceptical - Secrets of the Underground 00:07
I came to Alcatraz very sceptical
S01 • E02 However, something about the wall looks conspicuous, - Secrets of the Underground 00:07
However, something about the wall looks conspicuous,
S01 • E01 When it came to the art of eluding capture, - Secrets of the Underground 00:05
When it came to the art of eluding capture,
S01 • E08 But ground penetrating radar is now allowing us to see - Secrets of the Underground 00:06
But ground penetrating radar is now allowing us to see
S01 • E01 At the famous Green Mill Cocktail Lounge in his native Chicago, - Secrets of the Underground 00:09
At the famous Green Mill Cocktail Lounge in his native Chica...
S01 • E02 So why was it built? And could it be hiding something? - Secrets of the Underground 00:04
So why was it built? And could it be hiding something?
S01 • E07 So far, I found a lot of smoke, But not much fire, - Secrets of the Underground 00:08
So far, I found a lot of smoke, But not much fire,
S01 • E08 And between the scan of the yard - Secrets of the Underground 00:11
And between the scan of the yard
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