Drone orbiting around the hill where an ancient historical landmark called Perperikon is located, in Kardzhali province, Bulgaria

perperikon ancient thracian city kardzhali province bulgaria eastern rhodopes sacred place ruins ancient city hills mountains fortress historical megalith perperakion settlement shrine medieval masonry cultural ancient civilization altarpiece temple dionysus bulgarian history architecture rock sanctuary residential palace complex ancient buildings tombs rock city rhodope mountain archaeological complex tourists tourism destination attractions rock structures thracian sanctuary medieval fortress countryside historic sites landmarks archaeological site villages thrace woodlands forest trees