From a 1970s point of view, it could appear that the frescoes on the walls of this church in the "peaceful countryside" of "Yugoslavia" depict aircraft with "jets" but the narrator goes over the edge when he states that the man in the first "spaceship" has his hand on a "stick shift." There is no stick shift in this painting. The trippy music is excellent, however.
These frescoes are more widely thought to represent the passage of comets in medieval times. That's not to say that there's any shortage of historic artwork from all over the world depicting UFOs and unusual beings.