Directed by
| Jirí Sequens | ||
Writing Credits (in alphabetical order)
| Jirí Sequens | ||
| Milos Velínský | ||
Cast (in credits order)
| Josef Vinklár | ... | Antonín Homolka | |
| Stanislav Fiser | ... | Ctirad Santora | |
 |
Zdenek Braunschläger | ... | Vojta Dufek |
| Radovan Lukavský | ... | závodní ing. Sovek | |
| Rudolf Deyl | ... | Karel Skvajn | |
| Rest of cast listed alphabetically: | |||
| Josef Chvalina | ... | Hlavní geolog | |
| Rudolf Hrusínský | ... | zámecník Alois Pohanka | |
| Josef Kemr | ... | paleontolog Frantisek Jezek | |
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Karel Kocourek | ||
| Milos Kopecký | ... | Melichar Hnátek | |
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Eva Kubesová | ... | Ivanka Bartáková |
| Marie Kyselková | ... | Anicka Safránková | |
| Otto Lackovic | ... | Rudolf Pecián | |
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Vladimir Linka | ||
| Lubomír Lipský | ... | starsina Pohranicní stráze | |
| Jaroslav Mares | ... | Sofér | |
| Stanislav Neumann | ... | hlídac deda Jonás | |
|
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Jirí Smutný | ... | Geolog (as Jirí Smutny) |
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Jirina Steimarová | ... | Ruzena Jiricková |
| Ladislav H. Struna | ... | Minér | |
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Miroslav Svoboda | ... | Havír |
| Milos Vavruska | ... | porucík Plotek | |
| Václav Voska | ... | Terský | |
| Robert Vrchota | ... | Ludvík Mikola | |
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Oldrich Vykypel | ... | Jiricka |
| Bohus Záhorský | ... | Renner | |
| Stella Zázvorková | ... | Kveta Vejdovoda | |
Music by
| Milos Vacek | ||
Cinematography by
| Rudolf Milic | ||
Editing by
| Jan Chaloupek | ||
Production Design by
| Karel Lier | ||
Set Decoration by
| Antonin Pasek | ||
Costume Design by
| Anna Kuchacevicová | ||
| Marie Mala | ||
Makeup Department
| Vladimír Petrina | ... | makeup artist |
Production Management
| Josef Pitrák | ... | unit manager |
| Jirí Pokorný | ... | production manager |
Second Unit Director or Assistant Director
| Helena Pokorná | ... | assistant director |
| Vladimir Zelenka | ... | assistant director |
Sound Department
| Dobroslav Srámek | ... | sound |
Camera and Electrical Department
| Vladimír Reznícek | ... | assistant camera |
| Miroslav Sinkule | ... | assistant camera |
Music Department
| Frantisek Belfín | ... | conductor |
| Filmový Symfonický Orchestr | ... | orchestra |
| Josef Kainar | ... | lyricist |
