Ключевые слова: action, active, adrenaline, adventure, boat, bulgaria, challenge, dangerous, energy, exciting, exercise, extreme, flow, force, fun, group, helmet, kayak, man, nature, overcome, paddle, people, power, rafting, rapid, recreation, relaxation, risky, river, rocks, row, single, splash, sport, sportsman, strength, summer, survival, team, teamwork, tourist, trip, voyage, water, water sport, wave, wet, white, whitewater,