Beautiful color marred by inept camera work and hopeless script...endless irrelevant close-ups and out of frame action sequences follow meaningless long jungle trek sequence in which the members of a "scientific" expedition massacre the local native Africans who seem too stupid to learn that repeated charging with spears doesn't get them anywhere against an inexhaustible supply of guns and ammo. "Karzan" has even less screen time than Miles O'Keefe had in that awful Bo Derek opus. Ettore Manni, veteran of many adventure films here looks bloated and ill. Handsome Browne has nothing to do other than to walk around looking like one of the blond hero puppets out of "Thunderbirds" with his perfectly sculpted haircut, and for some reason his voice sounds as if dubbed by Edmund Purdom. Two of the supporting players look like Ernest Borgnine and Klaus Kinski. There's little else of interest to notice in this film, altogether lamentable.