Giant Russian K-7 flying fortress

The Russian K7 Flying Fortress was a project starting near 1929 and 1930 designed to be a giant sky fortress and create a perimeter in the skies to stop large quantities of aircraft before enter in Russian airspace.

It was capable of bombing the Nazi underground bases in Antarctica and back, also counter the Nazi UFO, a disc shaped aircraft project in the Third Reich.

Giant Russian K-7 flying fortress (1)

Giant Russian K-7 flying fortress (2)