The Lost City is an independently made 12 chapter science fiction film serial created and produced in 1935 by Sherman S. Krellberg and directed by Harry Revier.

[2] Zolok had created the natural disasters as a prelude to his attempt to take over the world, holding a brilliant scientist, Dr. Manyus, there hostage, along with his daughter, Natcha.

Gordon helps Manyus and his daughter to escape Zolok, but they encounter Ben Ali, a malignant slave trader; meet the sexy native Queen Rama, who tries to help them; and survive harrowing jungle adventures before returning to the Lost City and stopping Zolok's plan.

Source:[4] The film took the premise of that year's The Phantom Empire but transferred the lost civilization motif from the west to another popular serial locale, the African jungle.

In the early '40s Krellberg created a new feature version that incorporated material from the adventures with the slavers, spider people and jungle queen, and released this under the title City of Lost Men.