Ключевые слова: aleko, balkans, biosphere, bulgaria, christmas, cold, environment, europe, forest, gorgeous, green, hill, ice, landmark, landscape, meadow, mountain, mountaineering, mystery, natural, nature, outdoors, panorama, park, pine, plant, recreation, reserve, road, scenics, seasons, ski, sky, snow, sofia, sofia city region, sport, tourism, trail, travel, tree, trees, view, vitosha, vitosha mountain, wilderness, winter, wood, woodland,