Ключевые слова: action, active, adventure, boat, bulgaria, challenge, energy, eskimo roll, excitement, exercise, expedition, extreme, flow, fun, helmet, journey, kayak, kayaking, man, nature, outdoors, paddle, people, persevere, positive, power, raft, rafting, rapid, recreation, risky, river, row, single, soak, splash, sport, sportsman, strength, summer, survival, tourist, trip, voyage, water, water sport, wave, wet, white, whitewater,