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Since ancient times, catacombs in Rome and Paris
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Secrets of the Underground

Since ancient times,catacombs in Rome and Paris have offered outlaws and rebelsan easy...

Since ancient times,
catacombs in Rome and Paris have offered outlaws and rebels
an easy refuge from the law

Full Transcript

00:00:01.000 --> 00:00:04.072
Since ancient times, catacombs in Rome and Paris
00:00:04.008 --> 00:00:09.088
have offered outlaws and rebels an easy refuge from the law.
Duration
10 seconds
Views
19
Timestamp in Movie
00:17:37
Uploaded
Jul 12, 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 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
S01 • E03 As Janet explains, - Secrets of the Underground 00:08
As Janet explains,
S01 • E02 It looks like it was designed as a barrier to block the tunnel. - Secrets of the Underground 00:04
It looks like it was designed as a barrier to block the tunn...
S01 • E08 These brand-new maps can dissect the complex layers of history - Secrets of the Underground 00:09
These brand-new maps can dissect the complex layers of histo...
S01 • E07 Of radiation on the target, - Secrets of the Underground 00:06
Of radiation on the target,
S01 • E02 To find out, we're going to use what's called sonic echo testing. - Secrets of the Underground 00:05
To find out, we're going to use what's called soni...
S01 • E03 Basically, what's happening is these Irish folks come into town, - Secrets of the Underground 00:07
Basically, what's happening is these Irish folks come i...
S01 • E01 Each modest-looking home had a bathtub - Secrets of the Underground 00:05
Each modest-looking home had a bathtub
S01 • E02 By sending a sound wave into the wall and reading the echo, - Secrets of the Underground 00:09
By sending a sound wave into the wall and reading the echo,
S01 • E08 This is exactly what I've been looking for, - Secrets of the Underground 00:07
This is exactly what I've been looking for,
S01 • E01 The tunnels linked up with the public sewage system, - Secrets of the Underground 00:15
The tunnels linked up with the public sewage system,
S01 • E03 They're Catholic and this is, you know, - Secrets of the Underground 00:07
They're Catholic and this is, you know,
S01 • E07 And one of the most troubling Areas insar has pinpointed. - Secrets of the Underground 00:04
And one of the most troubling Areas insar has pinpointed.
S01 • E08 Let's see. So, what we've been doing is digitising the maps. - Secrets of the Underground 00:04
Let's see. So, what we've been doing is digitising...