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As it decays and collapses
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Secrets of the Underground

As it decays and collapses, it's probably going toleave some air space behind

As it decays and collapses, it's probably going to
leave some air space behind

Full Transcript

00:00:01.000 --> 00:00:02.072
As it decays and collapses,
00:00:02.008 --> 00:00:05.024
it's probably going to leave some air space behind.
Duration
5 seconds
Views
13
Timestamp in Movie
00:11:49
Uploaded
Jul 13, 2025
Season
1
Episode
3
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 • E07 Three ski patrol Lost their life. - Secrets of the Underground 00:04
Three ski patrol Lost their life.
S01 • E02 This state-of-the-art heating system, installed in 2013, - Secrets of the Underground 00:09
This state-of-the-art heating system, installed in 2013,
S01 • E03 Currents flow easily through damp soil, - Secrets of the Underground 00:06
Currents flow easily through damp soil,
S01 • E07 The danger here Is plainly visible, - Secrets of the Underground 00:05
The danger here Is plainly visible,
S01 • E02 It costs six million dollars, - Secrets of the Underground 00:07
It costs six million dollars,
S01 • E02 Colorado is the only State Capitol building in the country - Secrets of the Underground 00:08
Colorado is the only State Capitol building in the country
S01 • E01 I've heard the legends - Secrets of the Underground 00:10
I've heard the legends
S01 • E07 So, carbon dioxide, Right at the moment, - Secrets of the Underground 00:06
So, carbon dioxide, Right at the moment,
S01 • E02 For those who believe there's something top-secret - Secrets of the Underground 00:07
For those who believe there's something top-secret
S01 • E03 But then it's very simple because what we can do is run the algorithm. - Secrets of the Underground 00:05
But then it's very simple because what we can do is run...
S01 • E01 Now, if he was here, in this room, then how would he do that? - Secrets of the Underground 00:05
Now, if he was here, in this room, then how would he do that...
S01 • E03 The data collected from the currents - Secrets of the Underground 00:06
The data collected from the currents
S01 • E07 So, I'm gonna wave it Around here, - Secrets of the Underground 00:05
So, I'm gonna wave it Around here,
S01 • E08 Immediately, I begin wondering whether this tunnel - Secrets of the Underground 00:07
Immediately, I begin wondering whether this tunnel
S01 • E02 A continuity of government site needs its own source of power - Secrets of the Underground 00:09
A continuity of government site needs its own source of powe...
S01 • E01 At the time, the hotel was owned by Abraham Liebling from Chicago, - Secrets of the Underground 00:07
At the time, the hotel was owned by Abraham Liebling from Ch...
S01 • E07 The more c.O.2 Coming from the ground, - Secrets of the Underground 00:06
The more c.O.2 Coming from the ground,
S01 • E03 This colour scale is showing us resistivity, red being resistive. - Secrets of the Underground 00:05
This colour scale is showing us resistivity, red being resis...
S01 • E08 But there doesn't seem to be any obvious link. - Secrets of the Underground 00:04
But there doesn't seem to be any obvious link.
S01 • E01 They'd make sure the hotel was secure for them when they were here. - Secrets of the Underground 00:06
They'd make sure the hotel was secure for them when the...