The Mystery of Kara-Tau

The stationmaster of a railway station situated in the steppes of Kazakhstan discovers a rubber-bearing plant. Soon, an expeditionary team arrives, led by Professor Shakhron, who will persistently argue—by hook or by crook—that there are no rubber-bearing plants in these steppes, all the while plotting a trip abroad. In ultimately exposing the professor, the team forces him to admit to concealing the results of their work.

• Aleksandr DubrovskiyDirector
• Aleksandr DubrovskiyWriter
• Vera InberWriter
• Gabriel UreklyanWriter

• Vladimir GardinProfessor Shakhrov
• Nikolay KutuzovKuznetsov
• M. TulupovProfessor Yaroshevskiy
• Khakim DavletbekovKhakim
• Yevgeniya PyryalovaZhenya Maltseva
• Boris AzarovZaretskiy
• Eliana DuginaYoung Kazakh girl
• Kheyhana TastakhovaYoung kazakh woman
• Sergey GolubevTelegraph operator
• Viktor ZakharovGuryev, student (uncredited)
• Nikolai MichurinFactory worker (uncredited)
• Vladimir RomashkovScientist (uncredited)