Ключевые слова: active, activity, balance, balancing, bicycle, bike, biker, biking, challenge, copy space, cycle, cycling, cyclist, dust, environment, extreme, extreme sports, forest, freestyle, leisure, male, man, mountain bike, mtb, outdoors, people, person, pines, place, rocks, rocky, skill, sport, sportsman, stunt, transport, transportation, trees, trial, trial biking, wood,