Stock photography, photos: A skier hiking uphill Stock photos of A woman ski mountaineering on Donner Summit in California. Photograph: © William Stevenson Click for a larger image and more information Keywords associated with this stock photo: skiing, skier, ski, hiking, climbing, effort, energy, active, endurance, enduring, hard, difficult, desire, winter, climbing, climb, climber, snow, vertical, california, ca, Athletic, athlete, Outdoor, outdoors, outside, sports, sporting, sport, exercise, health, healthy, physical, fitness, outdoorsman, sportsman, adventure, adventuring, twenties, 20s, 30s, thirties, one, 1, person, sutph