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Shortly after this cellblock was built
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Secrets of the Underground

Shortly after thiscellblock was built, rumours began swirling thatthe inmates had also...

Shortly after this
cellblock was built, rumours began swirling that
the inmates had also constructed
a secret network of passageways under the new building that
could connect to the outside

Full Transcript

00:00:01.000 --> 00:00:03.000
Shortly after this cellblock was built,
00:00:03.008 --> 00:00:08.006
rumours began swirling that the inmates had also constructed a secret network of passageways
00:00:08.068 --> 00:00:11.076
under the new building that could connect to the outside.
Duration
12 seconds
Views
15
Timestamp in Movie
00:05:32
Uploaded
Jul 12, 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 • E03 While mapping the area's subterranean structure, - Secrets of the Underground 00:05
While mapping the area's subterranean structure,
S01 • E01 We can see utility pipes that go much, much further, - Secrets of the Underground 00:08
We can see utility pipes that go much, much further,
S01 • E03 We found an anomaly right here, - Secrets of the Underground 00:07
We found an anomaly right here,
S01 • E02 But some suspect that it actually refers - Secrets of the Underground 00:07
But some suspect that it actually refers
S01 • E01 It probably leads to a greater underground cave network, - Secrets of the Underground 00:06
It probably leads to a greater underground cave network,
S01 • E03 That anomaly turned out to be the remains of eight labourers, - Secrets of the Underground 00:07
That anomaly turned out to be the remains of eight labourers...
S01 • E08 Leading many, like Jim Quillen, - Secrets of the Underground 00:06
Leading many, like Jim Quillen,
S01 • E07 Holy smokes. Look at this hot spring. - Secrets of the Underground 00:04
Holy smokes. Look at this hot spring.
S01 • E01 Could it lead to how Al Capone was able to smuggle booze - Secrets of the Underground 00:08
Could it lead to how Al Capone was able to smuggle booze
S01 • E02 A phrase made famous by HG Wells's 1940 book of the same name, - Secrets of the Underground 00:13
A phrase made famous by HG Wells's 1940 book of the sam...
S01 • E08 He got here in the very early 1940s. - Secrets of the Underground 00:04
He got here in the very early 1940s.
S01 • E03 We found six bodies and another coffin - Secrets of the Underground 00:06
We found six bodies and another coffin
S01 • E07 I only got my hand About this far from it, - Secrets of the Underground 00:07
I only got my hand About this far from it,
S01 • E01 And there's also a tunnel on the other side too. - Secrets of the Underground 00:05
And there's also a tunnel on the other side too.
S01 • E08 And he was working in the kitchen and discovered that... - Secrets of the Underground 00:05
And he was working in the kitchen and discovered that...
S01 • E02 This term has since been linked to rumours - Secrets of the Underground 00:10
This term has since been linked to rumours
S01 • E08 When he lifted this big steel hatch on the floor of the kitchen, - Secrets of the Underground 00:11
When he lifted this big steel hatch on the floor of the kitc...
S01 • E03 Their excavations have also turned up artefacts - Secrets of the Underground 00:06
Their excavations have also turned up artefacts
S01 • E01 And then there's a second tunnel on this side. - Secrets of the Underground 00:04
And then there's a second tunnel on this side.
S01 • E03 We've got examples of Irish pipes. Wow, look at that. These are fantastic. - Secrets of the Underground 00:06
We've got examples of Irish pipes. Wow, look at that. T...