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So, as much as I love crawling down prison sewer pipes
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Secrets of the Underground

So, as much as I lovecrawling down prison sewer pipes, I need to stay focused onthe new...

So, as much as I love
crawling down prison sewer pipes, I need to stay focused on
the new lead revealed by our GPR - the air pockets behind
the outside wall of the dungeon

Full Transcript

00:00:01.000 --> 00:00:04.036
So, as much as I love crawling down prison sewer pipes,
00:00:04.044 --> 00:00:08.004
I need to stay focused on the new lead revealed by our GPR -
00:00:08.048 --> 00:00:11.092
the air pockets behind the outside wall of the dungeon.
Duration
12 seconds
Views
18
Timestamp in Movie
00:13:10
Uploaded
Jul 13, 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 This panel in the wall looks like a sealed door - Secrets of the Underground 00:05
This panel in the wall looks like a sealed door
S01 • E03 There is a large resistive mass, - Secrets of the Underground 00:10
There is a large resistive mass,
S01 • E02 No-one would argue about saving money, but some say the cost-cutting - Secrets of the Underground 00:09
No-one would argue about saving money, but some say the cost...
S01 • E01 In 1981, a fire burned out the doors so they were no longer operational. - Secrets of the Underground 00:06
In 1981, a fire burned out the doors so they were no longer ...
S01 • E07 The base of the mountain Is covered in dense forest, - Secrets of the Underground 00:07
The base of the mountain Is covered in dense forest,
S01 • E08 Right next door to it is the prison recreation yard, - Secrets of the Underground 00:10
Right next door to it is the prison recreation yard,
S01 • E01 Could construction repairs have covered Capone's secret passageway? - Secrets of the Underground 00:05
Could construction repairs have covered Capone's secret...
S01 • E02 Based on what I've seen so far, - Secrets of the Underground 00:07
Based on what I've seen so far,
S01 • E01 Since we can't just tear open the wall, - Secrets of the Underground 00:05
Since we can't just tear open the wall,
S01 • E03 What else could it be besides a mass grave? - Secrets of the Underground 00:05
What else could it be besides a mass grave?
S01 • E02 Any one of them could lead to a larger bunker or secret site. - Secrets of the Underground 00:05
Any one of them could lead to a larger bunker or secret site...
S01 • E08 Their ground penetrating radar scans revealed a sprawling set of anomalies - Secrets of the Underground 00:07
Their ground penetrating radar scans revealed a sprawling se...
S01 • E01 I want to get some tech guys - Secrets of the Underground 00:06
I want to get some tech guys
S01 • E07 Within the span of a year, - Secrets of the Underground 00:07
Within the span of a year,
S01 • E02 It reminds me of pictures I've seen - Secrets of the Underground 00:05
It reminds me of pictures I've seen
S01 • E03 There are infinite other things that it could be, - Secrets of the Underground 00:08
There are infinite other things that it could be,
S01 • E08 Could those actually be tunnels that connect to the gaps we found behind the dungeon wall? - Secrets of the Underground 00:06
Could those actually be tunnels that connect to the gaps we ...
S01 • E01 I'm bringing in Brad Rister and his team of experts from GPR Engineering - Secrets of the Underground 00:08
I'm bringing in Brad Rister and his team of experts fro...
S01 • E07 We look like we're In a ghost forest right now. - Secrets of the Underground 00:05
We look like we're In a ghost forest right now.
S01 • E02 It was a four-storey shelter buried underground - Secrets of the Underground 00:08
It was a four-storey shelter buried underground