Other mistake: In this scene we see two scenes used twice in the film. Tarzan and Sandra are climbing up the rocky terrain and a few minutes later we see the same scene of them climbing up.
Tarzan Triumphs (1943)
1 other mistake
Directed by: Wilhelm Thiele
Starring: Frances Gifford, Johnny Sheffield, Johnny Weissmuller, Stanley Ridges
Revealing mistake: In this scene we see Cheetah jumping down from a tree to the ground. In the next shot we see Cheetah and a circle of light moves, which indicates they were using a mirror or even a light for extra lighting to brighten up the shot. This happens very briefly and is very noticeable.