Goofs

The Naked Witch's purloined peignoir set changes in the cave; first she's wearing the short, one-shoulder negligee, then in the same scene she seems to be wearing the diaphanous robe, then she's suddenly back in the short, one-shoulder piece after she seduces the student with her dance. During her dance, she is clearly wearing inexplicably obtained white underpants as well - - and slip on footwear! (Previously barefoot since her bathing scenes)

The history of witchcraft given in the narration at the start of the movie is riddled with errors and bears very little resemblance to actual history. One of the more egregious errors is the claim that the Dark Ages followed the Middle Ages.

When the witch pushes the miller into the stream, more blood flows into the water than should have been in his body.

When the witch extinguishes the torch inside the cave, there is no change in the level of light. It doesn't get darker.

The film opens with a strange narration musing on the nature of good and evil, and what lurks beyond the edge of light. It makes little sense, especially as the witch was seemingly just a wronged widow before she was killed and rose from the dead, and did not indulge in any of the acts the narration is rambling on about.