entrance to the underground abandoned air base in željava

dcim 100media dji_0204 jpg tree trail forest road woodland waterway plant infrastructure hill shrub autumn mountain ridge valley leaf vegetation flower meadow entrance underground abandoned air base željava abandoned airbase airport military base aerodrome force airfield asphalt bihac croatia damaged destroyed empty former highway hiking horizon jna journey landing strip line military nature outdoor path plane road straight street transportation underground war yugoslav army people's wars