Ключевые слова: background, biosphere, bliznaka, bulgaria, bush, clear, clouds, cloudscape, destination, environment, europe, fog, grass, green, hill, kyustendil region, lake, landmark, landscape, mountain, mountain lakes, mountaineering, nature, outdoor, recreation, reflection, reserves, rila, rila lakes, rila mountains, rock, route, scenery, seven rila lakes, storm, sun, sunny, the fish, the seven rila lakes, the trefoil, the twin, the twin lake, tourism, trail, travel, trip, vacation, view, water,