The Beast of Yucca Flats is a B horror film released in 1961. The film stars Swedish former wrestler Tor Johnson and was both written and directed by Coleman Francis. The plot concerns a Soviet scientist (Johnson), who defects and flees to a Nevada Test Site called Yucca Flats, only to be turned into a monster by radiation that procededs to menace the desert. The film has very little dialogue and most of the speech is done by omniscient narration, provided by writer/director Francis.
Some critics have characterized the film as one of the worst science fiction horror films made, and one of the all-time worst films of any kind, even suggesting that it may be worse than Ed Wood’s legendarily bad Plan 9 from Outer Space.