Stock photography, photos: A man hiking in the Sierra Stock photos of A man hiking along a ridge in the Sierra Nevada mountains near Mount Whitney, CA Photograph: © William Stevenson Click for a larger image and more information Keywords associated with this stock photo: Backpacking, backpack, backpacker, Wilderness, high country, back country, action, active, effort, endurance, California, sierras, mount whitney, aerobic, challenge, adventure, hiking, distance, vista, grandeur, vastness, beauty, man, morning, evening, silhouette, mountains, summer, alpine, horizontal, scott keller 9 30 97,outdoor sports, outdoorsman