When a climber falls or wanders off the trail, it's an unwritten code of the mountain to leave them for dead, according to the film. The first person to reach K2's summit was Spaniard Alberto ...

K2, located in the Karakorum mountain range, is one of the most dangerous climbs. Last month, team of 10 Nepalese climbers made history by scaling the K2 for the first time in winter.