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Using an app on my phone That tracks solar movements
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Secrets of the Underground

Using an app on my phoneThat tracks solar movements, I can calculateThe exact trajectory

Using an app on my phone
That tracks solar movements, I can calculate
The exact trajectory

Full Transcript

00:00:01.000 --> 00:00:03.076
Using an app on my phone That tracks solar movements,
00:00:03.077 --> 00:00:06.099
I can calculate The exact trajectory.
Duration
6 seconds
Views
12
Timestamp in Movie
00:28:55
Uploaded
Jul 09, 2025
Season
1
Episode
7
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 Brian has been studying this part of the country for decades, - Secrets of the Underground 00:10
Brian has been studying this part of the country for decades...
S01 • E02 And he's been able to uncover clues beneath its surface - Secrets of the Underground 00:06
And he's been able to uncover clues beneath its surface
S01 • E03 If you look at this rock, - Secrets of the Underground 00:09
If you look at this rock,
S01 • E01 It's called electrical resistivity tomography, or ERT. - Secrets of the Underground 00:05
It's called electrical resistivity tomography, or ERT.
S01 • E02 Yet, even he still has a lot to learn about the true purpose - Secrets of the Underground 00:06
Yet, even he still has a lot to learn about the true purpose
S01 • E07 So essentially what We're looking for is the sun. - Secrets of the Underground 00:04
So essentially what We're looking for is the sun.
S01 • E01 ERT is an advanced subsurface imaging technique - Secrets of the Underground 00:07
ERT is an advanced subsurface imaging technique
S01 • E08 Been much higher, and then much lower, - Secrets of the Underground 00:06
Been much higher, and then much lower,
S01 • E03 Scree is a collection of broken rock fragments at the base of mountains or valleys - Secrets of the Underground 00:11
Scree is a collection of broken rock fragments at the base o...
S01 • E02 That's been the challenge for the last 200 years, - Secrets of the Underground 00:06
That's been the challenge for the last 200 years,
S01 • E01 It works by injecting electrical current into the ground - Secrets of the Underground 00:12
It works by injecting electrical current into the ground
S01 • E08 Brian explains that when the glaciers from the last ice age began to melt, - Secrets of the Underground 00:07
Brian explains that when the glaciers from the last ice age ...
S01 • E02 It's probably the most well-known mound - Secrets of the Underground 00:07
It's probably the most well-known mound
S01 • E03 And it could be another clue about the disappearance of the lake. - Secrets of the Underground 00:05
And it could be another clue about the disappearance of the ...
S01 • E08 But when the melting ice exposed a new channel to the St Lawrence River, - Secrets of the Underground 00:08
But when the melting ice exposed a new channel to the St Law...
S01 • E01 Since the conductivity of various materials is different, - Secrets of the Underground 00:12
Since the conductivity of various materials is different,
S01 • E02 Several different native tribes - Secrets of the Underground 00:11
Several different native tribes
S01 • E07 Of this chamber Hovering in the sky above? - Secrets of the Underground 00:04
Of this chamber Hovering in the sky above?
S01 • E07 As the sun rises... Wow, look at that. - Secrets of the Underground 00:04
As the sun rises... Wow, look at that.
S01 • E03 It looks a little bit like the sides of some of the hills in the Grand Canyon. - Secrets of the Underground 00:05
It looks a little bit like the sides of some of the hills in...