Ключевые слова: background, beautiful, beauty, blue, canada, coast, downstream, falls, famous, fast, flowing, foam, fresh, fun, glen, gorge, holiday, landmark, landscape, natural, nature, niagara, ontario, outdoor, outdoors, park, power, powerful, rapids, relax, river, rock, rocks, rough, strength, swirl, tourism, tourist, travel, tropical, vacation, view, walk, water, weather, wet, white,