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The top sensor measures Earth's baseline magnetic field
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Secrets of the Underground

The top sensor measuresEarth's baseline magnetic field, which stays relatively constant

The top sensor measures
Earth's baseline magnetic field, which stays relatively constant

Full Transcript

00:00:01.000 --> 00:00:04.072
The top sensor measures Earth's baseline magnetic field,
00:00:04.008 --> 00:00:07.000
which stays relatively constant.
Duration
7 seconds
Views
15
Timestamp in Movie
00:36:37
Uploaded
Jul 13, 2025
Season
1
Episode
2
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 When you get the flash off To the side, - Secrets of the Underground 00:08
When you get the flash off To the side,
S01 • E08 Then the triangulation of these lines from multiple photos - Secrets of the Underground 00:13
Then the triangulation of these lines from multiple photos
S01 • E01 It's not exactly cutting-edge tech, - Secrets of the Underground 00:05
It's not exactly cutting-edge tech,
S01 • E02 The sensor on the bottom detects any changes to that magnetic field - Secrets of the Underground 00:07
The sensor on the bottom detects any changes to that magneti...
S01 • E03 We're actually close to where the water is flowing - Secrets of the Underground 00:07
We're actually close to where the water is flowing
S01 • E07 Than you can just looking At it on this flat light. - Secrets of the Underground 00:04
Than you can just looking At it on this flat light.
S01 • E01 (ENGINE CUTS OUT) Killed it! - Secrets of the Underground 00:06
(ENGINE CUTS OUT) Killed it!
S01 • E07 This test will shave centuries Of wear off these markings. - Secrets of the Underground 00:04
This test will shave centuries Of wear off these markings.
S01 • E02 Magnetometers are also used in the military to detect submarines. - Secrets of the Underground 00:05
Magnetometers are also used in the military to detect submar...
S01 • E03 This is really interesting. Right back here, everything is tipped over. - Secrets of the Underground 00:05
This is really interesting. Right back here, everything is t...
S01 • E02 Ours isn't quite military-grade, - Secrets of the Underground 00:08
Ours isn't quite military-grade,
S01 • E03 The rocks almost look like something made them collapse, - Secrets of the Underground 00:08
The rocks almost look like something made them collapse,
S01 • E07 Get rid of The distracting color, - Secrets of the Underground 00:08
Get rid of The distracting color,
S01 • E08 After I've gathered all of the evidence I can, - Secrets of the Underground 00:06
After I've gathered all of the evidence I can,
S01 • E03 I've got two little kids myself and one of the things we love to do - Secrets of the Underground 00:05
I've got two little kids myself and one of the things w...
S01 • E02 This device should be able to identify - Secrets of the Underground 00:05
This device should be able to identify
S01 • E08 I'm convinced there's something peculiar - Secrets of the Underground 00:06
I'm convinced there's something peculiar
S01 • E01 Whoo-hoohoo! Yeah! - Secrets of the Underground 00:05
Whoo-hoohoo! Yeah!
S01 • E03 We'll stack 'em up on top of each other - Secrets of the Underground 00:08
We'll stack 'em up on top of each other
S01 • E08 Hopefully, the 3-D model will give me the tools - Secrets of the Underground 00:07
Hopefully, the 3-D model will give me the tools