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So I join underwater archaeologist Mark Holley on the top deck
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Secrets of the Underground

So I join underwater archaeologistMark Holley on the top deck to find out why he...

So I join underwater archaeologist
Mark Holley on the top deck to find out why he thinks
this discovery is so important

Full Transcript

00:00:01.000 --> 00:00:04.068
So I join underwater archaeologist Mark Holley on the top deck
00:00:04.076 --> 00:00:07.088
to find out why he thinks this discovery is so important.
Duration
8 seconds
Views
21
Timestamp in Movie
00:27:06
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 • E02 Is all that space really just for baggage handlers? - Secrets of the Underground 00:04
Is all that space really just for baggage handlers?
S01 • E03 Once the ROV settles, - Secrets of the Underground 00:06
Once the ROV settles,
S01 • E01 Because of that, we sometimes see faces or distinct shapes - Secrets of the Underground 00:13
Because of that, we sometimes see faces or distinct shapes
S01 • E02 But if it is part of some large classified site, - Secrets of the Underground 00:08
But if it is part of some large classified site,
S01 • E03 But if Paki stirs up silt with the thrusters and there is a leak, - Secrets of the Underground 00:09
But if Paki stirs up silt with the thrusters and there is a ...
S01 • E07 Likely reached these shores long Before the spaniard set sail. - Secrets of the Underground 00:05
Likely reached these shores long Before the spaniard set sai...
S01 • E08 We were looking for a shipwreck, - Secrets of the Underground 00:05
We were looking for a shipwreck,
S01 • E07 One author believes that A celebrated chinese mariner. - Secrets of the Underground 00:04
One author believes that A celebrated chinese mariner.
S01 • E08 We had no idea what it was, - Secrets of the Underground 00:06
We had no idea what it was,
S01 • E02 Now my quest to unlock America's underground secrets - Secrets of the Underground 00:12
Now my quest to unlock America's underground secrets
S01 • E01 In fact, the longer I look at the drone footage, - Secrets of the Underground 00:08
In fact, the longer I look at the drone footage,
S01 • E07 And landed on the west coast In the early 15th century, - Secrets of the Underground 00:07
And landed on the west coast In the early 15th century,
S01 • E07 And in newfoundland, canada, - Secrets of the Underground 00:04
And in newfoundland, canada,
S01 • E08 One look at the outline of the rocks was all it took to convince - Secrets of the Underground 00:08
One look at the outline of the rocks was all it took to conv...
S01 • E01 I feel like my mind is showing a pattern to me that may not exist. - Secrets of the Underground 00:05
I feel like my mind is showing a pattern to me that may not ...
S01 • E02 A gigantic man-made effigy, or earth mound, stretching over a quarter-mile long. - Secrets of the Underground 00:07
A gigantic man-made effigy, or earth mound, stretching over ...
S01 • E01 I don't see any of the hallmarks of man-made origins - Secrets of the Underground 00:06
I don't see any of the hallmarks of man-made origins
S01 • E07 Dating back more Than 400 years before that. - Secrets of the Underground 00:04
Dating back more Than 400 years before that.
S01 • E08 Hank's ancestors, the Anishinaabe people, - Secrets of the Underground 00:06
Hank's ancestors, the Anishinaabe people,
S01 • E02 In fact, it's believed to be the largest earthwork effigy mound - Secrets of the Underground 00:08
In fact, it's believed to be the largest earthwork effi...