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 seven rila lakes, the twin, the twin lake, tourism, trail, travel, trip, vacation, view, water,