To license this clip go to http://www.natgeomotion.com/bell/clip... Depending on luck, intuition and skill, climbers from all over the world attempt to survive the summit.With barely one in five expeditions succeeding without fatality, follow the first Americans to ever summit K-2.Follow the amazing story of Allison Hargreaves, who attempts to climb the three highest peaks in the world in one season; but what final cost does she pay for her dream?Finally, watch the spectacular journey of the Chilean team of 1986 as they toast one another atop the deadliest mountain in the world, K-2.