2:28
The Perils of Searching for Sunken Treasure
Science Channel
1:36
This Underwater Camera Hunts For Missing Gold
2:39
Searching For Booze Smuggling Tunnels Beneath The Detroit River
1:54
Exploring What Lies Beneath Nikola Tesla's Lab | Secrets of the Underground
1:29
How To Find Long Lost Treasure Under An Ancient Church | Secrets of the Underground
1:40
See Rob Nelson's Favorite Location from Secrets of the Underground
3:11
This California Supervolcano Has Geologists Wondering: Is It Waking Up?
2:08
See How Scientists Use Underwater Scanning Technology To Find Hidden Details
3:14
See How Scientists Create Mini Earthquakes in a Laboratory
3:20
We've Unlocked The Secret Of The Legendary Thor's Well
1:35
What Is The Meaning Of This Underwater Stonehenge?
2:55
This Treasure Trove of Ice Age Fossils Came From One Texas Cave
1:38
How Do Paleontologists Date Fossils? | Secrets of the Underground
0:54
Where Did Pi Come From? Happy #PiDay! | Secrets of the Underground
3:00
Dinosaurs Left Evidence Of Their Mating Ritual In Colorado | Secrets of the Underground
3:16
What Really Happened To These Railroad Workers Found In A Mass Grave?
3:21
What is the Meaning of Ohio's Mysterious Serpent Mound? | Secrets of the Underground
These High Tech Tools Help Locate Secret Tunnels | Secrets of the Underground
3:19
These Hidden Tunnels And Stairways Helped Al Capone Evade Arrest
1:10
Secrets of the Underground | NEW SERIES | Premieres Tue Feb 14