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But was mere intolerance enough of a motivation for mass murder?
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Secrets of the Underground

But was mere intolerance enoughof a motivation for mass murder?

But was mere intolerance enough
of a motivation for mass murder?

Full Transcript

00:00:01.000 --> 00:00:04.008
But was mere intolerance enough of a motivation for mass murder?
Duration
5 seconds
Views
15
Timestamp in Movie
00:18:12
Uploaded
Jul 09, 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 • E08 That way we were able to overlay all of them on top of each other - Secrets of the Underground 00:07
That way we were able to overlay all of them on top of each ...
S01 • E07 Wow, look at that. Resurgent dome, - Secrets of the Underground 00:05
Wow, look at that. Resurgent dome,
S01 • E01 In 2013, the Chicago Crime Commission named Guzman Public Enemy No.1. - Secrets of the Underground 00:07
In 2013, the Chicago Crime Commission named Guzman Public En...
S01 • E08 The main cellblock, the rumoured site of the Spanish tunnels, - Secrets of the Underground 00:08
The main cellblock, the rumoured site of the Spanish tunnels...
S01 • E03 Piecing together the evidence from the recovered remains and historical records, - Secrets of the Underground 00:08
Piecing together the evidence from the recovered remains and...
S01 • E07 There is something underneath it That's pushing it upwards. - Secrets of the Underground 00:04
There is something underneath it That's pushing it upwa...
S01 • E08 But Peter thinks the key to understanding the anomalies we've found - Secrets of the Underground 00:09
But Peter thinks the key to understanding the anomalies we&#...
S01 • E07 Yeah, it's close to a meter Over the last 20 or 30 years. - Secrets of the Underground 00:04
Yeah, it's close to a meter Over the last 20 or 30 year...
S01 • E02 Just one knock is all it takes - Secrets of the Underground 00:06
Just one knock is all it takes
S01 • E03 When a cholera epidemic swept through their camp, - Secrets of the Underground 00:14
When a cholera epidemic swept through their camp,
S01 • E01 This section of this room very well could have been the stairway. - Secrets of the Underground 00:05
This section of this room very well could have been the stai...
S01 • E07 Well, from what I know About volcanos, - Secrets of the Underground 00:06
Well, from what I know About volcanos,
S01 • E08 Before Alcatraz was a federal penitentiary, - Secrets of the Underground 00:07
Before Alcatraz was a federal penitentiary,
S01 • E02 Maybe let's go further down - Secrets of the Underground 00:05
Maybe let's go further down
S01 • E07 This could be a frightening sign That trouble is brewing. - Secrets of the Underground 00:04
This could be a frightening sign That trouble is brewing.
S01 • E08 He tells me that these fortifications were built around 1860, - Secrets of the Underground 00:07
He tells me that these fortifications were built around 1860...
S01 • E07 Have often preceded Devastating eruptions. - Secrets of the Underground 00:04
Have often preceded Devastating eruptions.
S01 • E03 The thinking is, "Go after the intruders." - Secrets of the Underground 00:10
The thinking is, "Go after the intruders."
S01 • E07 The largest volcano on earth, Hawaii's mauna loa, - Secrets of the Underground 00:09
The largest volcano on earth, Hawaii's mauna loa,
S01 • E08 So, this is Alcatraz as it is today. - Secrets of the Underground 00:04
So, this is Alcatraz as it is today.