Tourists walking on illuminated footpath inside the famous postojna cave, a karst cave system near postojna, slovenia

deserted no one no people nobody uninhabited empty visitor visitors footpath footpaths footway foot path stalagtite stalagtites stalactite stalactites dripstone cave dripstone caves stalactite cave stalactite caves dripstone dripstones cave caves nature open air slovenia tourist tourists holidaymaker holidaymakers underground subterranean belowground europe europe's tourism geology geology tourist attraction tourist attractions place of interest famous place famous places sight landmark tourist landmark places of interest tourist spot illuminated spotlighted luminous illuminating lit illuminates famous renowned famed natural landmark landscape landscapes scenery sceneries landscape photograph countryside landscape shot landscape photo southeast europe southeastern europe slovenian slovene balkans balkan balkan peninsula european way ways path paths geologic geological karst cave karst caves travel photography postojna adelsberg postumia stalagmite stalagmites postojna cave postojna caves cave system cave systems karst cave system