Ключевые слова: beautiful, blue, bulgaria, calm, ecology, environment, green, highlands, landscape, light, long, majestic, morning, mountain, mountaineering, nature, orange, outdoor, panorama, park, peace, peak, pirin, range, red, river, rock, scene, scenery, scenic, season, serene, sky, stone, stream, sunshine, tourism, tranquil, travel, view, water,