12:14

Tamar Valley Trails: Adit under the bridge

40:02

Exploring a Hidden 1890s Mine in a Middle-Earth Setting Rare Artifacts & Blasted Miners Trail

23:59

The Cave Collapsed On Me

32:17

Crazy Underground Landscapes Down This Mine Shaft - Part 1 of 3

11:33

Last Look inside this Now SEALED Mercury Mine

8:48

Ancient Dartmoor: Grimspound Settlement

12:56

Once in a Lifetime Discovery While Exploring Abandoned Mine

36:39

Inside the Biggest Underground Chamber Ever Discovered