Ключевые слова: beauty in nature, blue, bright, bulgaria, clean, drinking water, environment, freedom, freshness, grass, green color, high up, hill, holiday, idyllic, lake, landscape, mountain, mountain peak, mountain sports, national landmark, nature, no people, outdoors, park man made space, people traveling, pond, purity, rila mountains, rock object, rural scene, tranquil scene, transparent, travel location, valley, vibrant color, waters edge, wilderness area,