Steve Backshall's Extreme Mountain Challenge

Episode 2 (1x2)

Air date: Mar 13, 2016

The naturalist reaches the peak of one of Venezuela's tepui mountains, before joining a party of Italian cavers as they venture into the unexplored caverns within. Inside, they discover strange wildlife and evidence of the geological forces that give the tepuis their unusual shape. Finally, the team returns to the ground by abseiling down the Angel Falls, the world's highest waterfall