Exploring the Mountain Chief Mine - The Upper Workings (Part 1 of 2)
17:15
Exploring the Mountain Chief Mine - The Haulage Level (Part 2 of 2)
23:45
Things That You Don't Want To See Underground...
16:04
A Forgotten Innovation: The Strange Saga of the Roller Boats
20:46
What did the Soviets discover in the Kola Superdeep well at a depth of 12,262 meters?
28:17
Surprising Discovery Hidden Deep Inside this Abandoned Gold Mine
25:51
Weird Stuff in An Abandoned Mine
25:27
The Infamous Toxic Ghost Town in Colorado | ABANDONED
18:44