Inside History on Instagram: "Climbing Everest is already a fight for survival. Skiing down it without oxygen borders on the impossible! ⛷️ You’re watching Andrzej Bargiel — the first person to ski from the summit of Mount Everest all the way to the bottom without using supplemental oxygen. At 8,848 meters (29,032 ft), he’s deep inside the “Death Zone,” where the air holds only a third of the oxygen found at sea level. Up here, the human body is slowly shutting down. Most climbers can hardly tak