Ключевые слова: aerial, aerial view, ancient, architecture, authentic, balkan, balkan mountains, balkans, bulgaria, color, countryside, culture, drone, environment, ethnographic, europe, forest, hill, historical, history, houses, kotel, landmark, landscape, medieval, mountain, natural, nature, outdoor, panorama, peninsula, rural, scenics, sight, sightseeing, sliven region, stara planina, tourism, town, travel, tree, view, village, wood, zheravna,