At 28,251 feet, K2 is second to only Mount Everest as the tallest mountain in the world. Though 778 feet shorter than Everest, it's also much more dangerous, with a higher death rate than its taller counterpart.
Four years ago, 11 climbers died during an attempt to scale the mountain, the deadliest recorded day in K2's history. The accident received widespread attention, but the extraordinary rescue that followed went unreported.
Authors Peter Zuckerman and Amanda Padoan new book, "Buried In The Sky," followed the story of two sherpas who faced near death. Cheering, a local climbing superstar, was climbing K2 for the challenge. The other, named Pasang, was an unknown porter who was there just to make money. Both men reached the summit of K2 late in the day, but when they tried to climb down, Pasang and several others were cut off with no where to go.
Peter Zuckerman and Amanda Padoan, authors of "Buried In The Sky"