A white-knuckle free-climb up three mountain peaks in 24 hours. An endurance-testing expedition, that pits two friends against the brutal elements of Antarctica. Experience amazing, terrifying, never-before-seen (or done) adventures that define the riskiest of everything National Geographic represents. It's where men and women push the limits of adventure, endurance and possibility--all in the name of science and exploration.
Aired: Jul 9, 2014Nat Geo's veteran bear expert Casey Anderson and seasoned naturalist Jason Ma...
