I saw this in my childhood and took years to track it down again since I saw it under one of its two confusing Roger Corman english-language re-edits [Voyage to the Prehistoric Planet with Basil Rathbone added, and Voyage to the Planet of Prehistoric Women, with mermaids scenes directed by Peter Bogdonavich.] Finally able to track down the original Russian version recently, I was able to fully appreciate the ambitious scope and production values. The forest is truly primeval in its detailed beauty, Robot John both heroic and sad in his dedication, and the ending poetic and lyrical. Non-U.S. science fiction films are doubly exotic, and this one is classic fare.
Review of Planeta bur
