Directed by
| Robert Day | ||
Writing Credits
| Ralph Anders | ||
| Robert Day | ||
| Stanley Norman | ||
| Ralph Anders | ... | (novel) |
| Rick Trader Witcombe | ... | (additional dialogue) |
Cast (in credits order)
| Stephen Boyd | ... | Leyton van Dyk | |
| France Nuyen | ... | Atanga | |
| Ray Milland | ... | Prof. Pete Handley | |
| Cameron Mitchell | ... | Bruno Carstens | |
| Brendon Boone | ... | Jim Handley | |
 |
Michael Kirner | ... | Mark Handley |
| John van Dreelen | ... | Lee (as John Van Dreelen) | |
| John Stacy | ... | Gen. Bill Stryker | |
| George Wang | ... | Wong | |
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Marié du Toit | ... | Lucie Handley (as Marie du Toit) |
| Ian Yule | ... | Task Force Leader | |
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Bill Brewer | ... | Ship's Captain |
| Romano Puppo | ... | Alberto | |
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Larry McEvoy | ... | Dr. Warden |
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Anthony Pritchard | ||
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Judy Washington | ||
| Rest of cast listed alphabetically: | |||
| Anthony Dawson | ... | Burton (uncredited) | |
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Roger Dwyer | ... | Skipper (uncredited) |
Produced by
| Rudolph Andreas | ... | executive producer |
| Stanley Norman | ... | producer |
Music by
| Francesco De Masi | ||
Cinematography by
| Mario Fioretti | ||
Editing by
| Frederick Wilson | ... | (as Freddie Wilson) |
Art Direction by
| Basil Deny | ||
Makeup Department
| Gert Bogner | ... | hair stylist |
| Nola du Preez | ... | makeup artist |
| Massimo Giustini | ... | makeup supervision |
Production Management
| Gerd Roeber | ... | production supervisor |
Second Unit Director or Assistant Director
| Carlo Lastricati | ... | assistant director |
Art Department
| Alberto Korda | ... | construction design |
Sound Department
| Ernie Cousins | ... | sound recordist (as Ernest Cousin) |
Special Effects by
| Giulio Molinari | ... | special effects |
Stunts
| Sergio Mioni | ... | stunt supervision |
Camera and Electrical Department
| Carlo Fioretti | ... | camerman |
| Alberto Gubbiotti | ... | lighting director |
| Rainer Lanuschny | ... | assistant camera |
Costume and Wardrobe Department
| Gerald Josch | ... | wardrobe design |
| Theo Lubbe | ... | wardrobe design |
| Reggie Wollschlager | ... | wardrobe (as Regina Wollschlager) |
Music Department
| Francesco De Masi | ... | conductor |
Script and Continuity Department
| Cheryl Frootko | ... | continuity |
Additional Crew
| Francesco Fele | ... | production assistant |
| Virginia Fung | ... | director's assistant |
| Christopher Galloway | ... | production assistant |
| Roland Robinson | ... | production assistant |
