Ключевые слова: background, 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, rila, rila lakes, rila mountains, rock, route, scenery, seven rila lakes, storm, sun, sunny, the fish, the fish lake, the seven rila lakes, tourism, trail, travel, trip, vacation, view, water,