In the late 1960s, decades deep into the Cold War, US intelligence analysts monitoring the Caspian Sea came across satellite images of an oddly shaped, winged machine of huge proportions.
원문출처 : https://www.cnn.com/travel/article/caspian-sea-monster-ekranoplan-ground-effect-vehicle/index.html
원문출처 : https://www.cnn.com/travel/article/caspian-sea-monster-ekranoplan-ground-effect-vehicle/index.html