aerial scenic view of rila mountain and iskar resrvoir bulgaria

aerial air aircraft airline airplane land earth atmosphere attraction attractive balkan balkans blue bulgaria climate destination discover discovery europe european flight fly flying holiday holidays horizon industry jet journey aviation airborn mountains overview panorama passenger range perspective plane flights prospect scene scenery scenic sofia space tourism tourist transport transportation travel trip vacation vacations vast view foreground mountain aircarrier distant excursion ground terrain peaks summit valley distance field iskar reservoir rila cloudscape resrvoir lake dam basin