A trader and his daughter set off in search of the fabled graveyard of the elephants in deepest Africa, only to encounter a wild man raised by apes.

Johnny Weissmuller ... Tarzan
Neil Hamilton ... Harry Holt
C. Aubrey Smith ... James Parker
Maureen O'Sullivan ... Jane Parker
Doris Lloyd ... Mrs. Cutten
Forrester Harvey ... Beamish
Ivory Williams ... Riano
Franz Balluck ... Evil Dwarf
Charles Becker ... Evil Dwarf
Eddie Buresh ... Evil Dwarf
Ray Corrigan ... Ape
Billy Curtis ... Evil Dwarf
Johnny Eck ... Bird Creature
Joseph Herbst ... Evil Dwarf
Jiggs ... Cheeta
Johnny Leal ... Evil Dwarf
Jack Leonard ... Ape
Angelo Rossitto ... Evil Dwarf
Tanner ... Lion
Gus Wayne ... Evil Dwarf
Johnny Winters ... Evil Dwarf