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The only way to get down in these things and get a good cross-section
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Secrets of the Underground

The only way to get down in thesethings and get a good cross-section is to use a big toy!

The only way to get down in these
things and get a good cross-section is to use a big toy!

Full Transcript

00:00:01.000 --> 00:00:05.068
The only way to get down in these things and get a good cross-section
00:00:05.076 --> 00:00:07.036
is to use a big toy!
Duration
7 seconds
Views
16
Timestamp in Movie
00:36:24
Uploaded
Jul 09, 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 Jarrod has another tech tool we can use to probe for new clues. - Secrets of the Underground 00:05
Jarrod has another tech tool we can use to probe for new clu...
S01 • E07 With the naked eye. - Secrets of the Underground 00:04
With the naked eye.
S01 • E08 Placing scale bars around the rock as a point of reference - Secrets of the Underground 00:12
Placing scale bars around the rock as a point of reference
S01 • E07 We set up At the first carving, - Secrets of the Underground 00:04
We set up At the first carving,
S01 • E02 It senses differences in the Earth's magnetic field as you walk it along. - Secrets of the Underground 00:05
It senses differences in the Earth's magnetic field as ...
S01 • E03 Near the top of the ridge is a giant boulder field - Secrets of the Underground 00:06
Near the top of the ridge is a giant boulder field
S01 • E02 The top sensor measures Earth's baseline magnetic field, - Secrets of the Underground 00:07
The top sensor measures Earth's baseline magnetic field...
S01 • E08 A line of sight is constructed from the camera - Secrets of the Underground 00:05
A line of sight is constructed from the camera
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,