Plot hole: The movie is allegedly set about ten years after the death of the German soldiers, since the daughter of one soldier is in her early teens. But none of the items in the scenery look like they're out of the fifties.
Zombie Lake (1981)
1 plot hole
Directed by: Jean Rollin, Julian de Laserna
Starring: Antonio Mayans, Anouchka, Howard Vernon, Pierre-Marie Escourrou
Continuity mistake: When Katya and the Mayor enter his study and sit down, in one shot Katya puts her hand up to under her mouth. In the next closeup it is down. (00:18:50)