Kilian Jornet talks to Steve House about his childhood. His father, a mountain guide, introduced him to the mountains at a very early age. By the age of 3, he was doing ski ascents and descents of nearby mountains, and by the time he was 5 years old he was climbing 3,000-meter (12,000-foot) peaks with an ice axe and crampons.
Kilian Jornet: Childhood