Drone flying through the entrance of Kozarnika Cave and out into the open space facing the Balkan Mountains in Bulgaria

entrance opening clouds mist fog caves kozarnika cave the goat shed bulgaria gravettian balkan mountains danubian plains belogradchik karst prehistoric site kozarnikian lithic tradition lipnitsa botevgrad sofia province dimovo municipality goat pen stalactites stalagmites dendrites sinters cave pearls chelates archaeological excavations fossils evergreen deciduous forests steppe trees mountains forests ruins skies treetops stara planina historical cultural artifacts landscape scenery panoramic geographic anthropological scenic