Stock photography, photos: A man riding a mountain bike Stock photos of A man riding his mountain bike between two large boulders with a purple sky background near Smith Rock, OR. Photograph: © William Stevenson Click for a larger image and more information Keywords associated with this stock photo: biking, mountain biking, bike, cycling, bicycling, back country, active, action, aerobic, difficult, adventure, freedom, distance, man, male, solo, morning, evening, silhouette, spring, summer, fall, autumn, blue, purple, backlight, backlit, horizontal, adventure, outdoors, outside, sports, sportsman, outdoorsman, Wood, smith rock, oregon, or