Delightfully trippy, campy trailer for one of the strangest classic-era SF movies you’ll ever see, Battle Beyond the Sun by Roger Corman and Francis Ford Copolla.
the entire film used dubbed footage from a Soviet SF film, Nebo Zovyot. Except for the scenes of the monsters, shown more clearly in this trailer than in the film itself.
You have to check out the monsters. One can only surmise their resemblance to human male and female genetailia was deliberate camp.