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Including a mysterious network of tunnels
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Secrets of the Underground

Includinga mysterious network of tunnels under a nearly 2,000-year-oldMexican pyramid, and...

Including
a mysterious network of tunnels under a nearly 2,000-year-old
Mexican pyramid, and an ancient Roman
gladiator school in Austria

Full Transcript

00:00:01.000 --> 00:00:03.000
Including a mysterious network of tunnels
00:00:03.008 --> 00:00:06.076
under a nearly 2,000-year-old Mexican pyramid,
00:00:06.084 --> 00:00:09.084
and an ancient Roman gladiator school in Austria.
Duration
10 seconds
Views
19
Timestamp in Movie
00:02:55
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 • E01 Notable guests included FDR, JFK and the Rolling Stones. - Secrets of the Underground 00:06
Notable guests included FDR, JFK and the Rolling Stones.
S01 • E03 The papers tell of the construction - Secrets of the Underground 00:06
The papers tell of the construction
S01 • E01 F Scott Fitzgerald used the Seelbach - Secrets of the Underground 00:07
F Scott Fitzgerald used the Seelbach
S01 • E02 1,000 people? There's about 1,000 people who work in the tunnels. - Secrets of the Underground 00:04
1,000 people? There's about 1,000 people who work in th...
S01 • E08 Today, I'm betting GPR can help us - Secrets of the Underground 00:09
Today, I'm betting GPR can help us
S01 • E01 The title character was based on the real-life gangsters he saw here, - Secrets of the Underground 00:09
The title character was based on the real-life gangsters he ...
S01 • E02 I know that's not gonna help our case - Secrets of the Underground 00:06
I know that's not gonna help our case
S01 • E03 So, this whole thing goes back to an incident that happened - Secrets of the Underground 00:06
So, this whole thing goes back to an incident that happened
S01 • E02 So, this clearly isn't the first time Heath has heard these questions. - Secrets of the Underground 00:05
So, this clearly isn't the first time Heath has heard t...
S01 • E03 What we know here is that a total of 57 Irish railroad workers - Secrets of the Underground 00:10
What we know here is that a total of 57 Irish railroad worke...
S01 • E01 In the Prohibition era of the 1920s, - Secrets of the Underground 00:07
In the Prohibition era of the 1920s,
S01 • E08 My first stop is the main cellblock, - Secrets of the Underground 00:06
My first stop is the main cellblock,
S01 • E02 After all, strict access procedures are now in place - Secrets of the Underground 00:07
After all, strict access procedures are now in place
S01 • E01 After picking up a new supply of bourbon and moonshine, - Secrets of the Underground 00:08
After picking up a new supply of bourbon and moonshine,
S01 • E08 Meeting me there is Alcatraz historian John Martini. - Secrets of the Underground 00:05
Meeting me there is Alcatraz historian John Martini.
S01 • E03 And we're at the site of the most difficult mile in that entire system. - Secrets of the Underground 00:04
And we're at the site of the most difficult mile in tha...
S01 • E02 But I have to wonder, - Secrets of the Underground 00:11
But I have to wonder,
S01 • E01 From here, cash and contraband were allegedly funnelled underground, - Secrets of the Underground 00:08
From here, cash and contraband were allegedly funnelled unde...
S01 • E03 In 1832, a contractor named Philip Duffy - Secrets of the Underground 00:07
In 1832, a contractor named Philip Duffy
S01 • E01 This is the legend. But did it really happen? - Secrets of the Underground 00:04
This is the legend. But did it really happen?