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To my knowledge, there's no comprehensive map
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Secrets of the Underground

To my knowledge,there's no comprehensive map of the tunnelsthat was ever created

To my knowledge,
there's no comprehensive map of the tunnels
that was ever created

Full Transcript

00:00:01.000 --> 00:00:03.032
To my knowledge, there's no comprehensive map
00:00:03.004 --> 00:00:05.024
of the tunnels that was ever created.
Duration
5 seconds
Views
16
Timestamp in Movie
00:14:16
Uploaded
Jul 13, 2025
Season
1
Episode
2
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 • E03 So we won't be able to confirm for sure - Secrets of the Underground 00:09
So we won't be able to confirm for sure
S01 • E01 Today, though, we'll use it to scan Capone's second-floor hideout, - Secrets of the Underground 00:18
Today, though, we'll use it to scan Capone's secon...
S01 • E07 When you have a fire, - Secrets of the Underground 00:07
When you have a fire,
S01 • E02 I don't know why there's not a map of the tunnel system, - Secrets of the Underground 00:07
I don't know why there's not a map of the tunnel s...
S01 • E03 Why would railroad officials try to conceal these 49 deaths - Secrets of the Underground 00:08
Why would railroad officials try to conceal these 49 deaths
S01 • E08 Each step you're taking is shooting out hundreds of data points - Secrets of the Underground 00:07
Each step you're taking is shooting out hundreds of dat...
S01 • E07 Would probably be completely Charred and burnt. - Secrets of the Underground 00:04
Would probably be completely Charred and burnt.
S01 • E02 So, we have a State Capitol with state-of-the-art heating, - Secrets of the Underground 00:08
So, we have a State Capitol with state-of-the-art heating,
S01 • E08 If these secret Spanish tunnels do exist, - Secrets of the Underground 00:06
If these secret Spanish tunnels do exist,
S01 • E03 According to the company's recently unearthed secret files, - Secrets of the Underground 00:12
According to the company's recently unearthed secret fi...
S01 • E07 As I wind my way through This haunting landscape, - Secrets of the Underground 00:07
As I wind my way through This haunting landscape,
S01 • E01 The lasers could damage our cameras, so we can't film the process. - Secrets of the Underground 00:06
The lasers could damage our cameras, so we can't film t...
S01 • E02 So, we're gonna try to figure out where these tunnels are from up above. - Secrets of the Underground 00:05
So, we're gonna try to figure out where these tunnels a...
S01 • E08 That's probably the bottom of the concrete - Secrets of the Underground 00:06
That's probably the bottom of the concrete
S01 • E07 So, I knelt down here To try to look at the soil, - Secrets of the Underground 00:06
So, I knelt down here To try to look at the soil,
S01 • E02 Down in this labyrinth, it's hard to know which direction I'm facing, - Secrets of the Underground 00:10
Down in this labyrinth, it's hard to know which directi...
S01 • E08 The GPR is not revealing much of anything in most of the yard. - Secrets of the Underground 00:04
The GPR is not revealing much of anything in most of the yar...
S01 • E07 If you take A big handful of dirt, - Secrets of the Underground 00:09
If you take A big handful of dirt,
S01 • E01 OK. I have our results for our Lidar tests here. - Secrets of the Underground 00:05
OK. I have our results for our Lidar tests here.
S01 • E03 Cholera is typically spread through tainted food and water. - Secrets of the Underground 00:05
Cholera is typically spread through tainted food and water.