Orbiting drone shot showing a man walking towards a water reservoir through a ramp of wooden planks on top of the ancient city of Perperikon in the province of Kardzhali in Bulgaria

watre reservoir ramps wooden planks perperikon ancient thracian city kardzhali province bulgaria eastern rhodopes sacred place ruins ancient city hills mountains fortress historical megalith perperakion thrace 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 stairs