Goofs

When Tarzan is first captured by the ivory poachers, Lex Barker is shown bound inside the poachers' hut and during his confrontation with Monique Van Vooren and Raymond Burr, he is clearly barefoot.

Moments later, when Tarzan emerges from the hut, breaks his bonds, charges through the crowd of the poachers' henchmen and escapes into the jungle, Barker is clearly wearing some sort of footwear, yet when he arrives at the burnt out remains of his jungle home, he's barefoot again.

As Raymond Burr's character is whipping Tarzan & in later scenes, the marks left by the whip appear, disappear & change positions from cut to cut.

Boomerangs are of uniquely Australian origin, not African.

Returning-type boomerangs are not used in actual war or hunting. They are practice "toys."

Although set in Africa, the elephants are Asian elephants, not found in Africa.

Early in the film, Lavarre speaks of wanting "competence." The word mostly likely was written as "compensation."

A group of native warriors friendly to Tarzan demonstrates their skills with various weapons. When they hurl boomerangs, the wires used to suspend the weapons in the air can be seen.

After Jane falls unconscious in the jungle, an elephant finds her and picks her up with its trunk. The wires allowing her to be lifted and the clips linking them to her costume can clearly be seen.

When the unconscious Jane is picked up by the elephant in the jungle, there is a close-up of the elephant's trunk and tusks as it gathers up Jane. The tusks in the close-up are reversed, curving the opposite way. The longer camera view in the next shot shows the actual elephant and, of course, depicts the tusks in the appropriate way.

Four of the five Locopo men who demonstrate their supposedly expert boomerang skills throw them underhand. Proper technique for return flights is to throw them overhand with the open angle forward. Also, the boomerangs are shown hovering to break fruit off tree branches. Boomerangs cannot hover (as evidenced by the visible strings that are suspending the boomerangs), especially if they are supposed to return to the thrower. When these magic boomerangs do return, the special effect is very obviously just reversing a shot of the men throwing the boomerangs. Quite possibly the most ridiculous sequence in any of the Tarzan films.

The "natives" were the wrong color.