The russian language version is rare, but well worth seeing. If you're really curious, you can see the American version which was retitled "Voyage to the prehistoric planet" and released in 1966. Back in the early 1960s, when this film was made, the Soviets had focused thier space program on Venus. In fact, they were the first to send probes into the atmosphere, land successfully, and return pictures from the surface. It's no wonder they were inspired to produce an extravagant adventure, based on the promise of thier exploration. The story is basic and straight forward, about an expedition to the planet Venus, but the science is flawed. They encounter oceans, flooding rains, and animal life. When this film was produced, we were just beginning to discover the truth about Venus. A surface temperature at the melting point of lead. A poisinous atmospere, with crushing pressure hundreds of times as heavy as ours. No water, or oxygen, and sulfuric acid in the clouds. If you're lucky enough to run across this film, forget all that, suspend you disbelief, and enjoy this rare classic gem.