Stock photography, photos: A man hiking on a trail Stock photos of A man hiking on a trail at Sierra Buttes, 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, simplicity, inspiration, action, active, effort, energy, aerobic, challenge, desire, adventure, freedom, hiking, distance, vista, grandeur, vastness, beauty, couples, morning, evening, man, male, female, trail, sign, woman, sierra, mountains, summer, lake, California, sierras, alpine, water, horizontal, kelty, thermarest, McnaPres, outdoors, outdoorsman