Amicus Production’s Milton Subotsky gave us some of the most beloved B films of the 1960s and 1970s, including two of my all-time favorites: The Land That Time Forgot (1974) and The People That Time Forgot (1977). Too bad we were denied his sword and sorcery extravaganza that would have featured stop-motion animated “air boats,” “lizard-hawks,” “giant flying spiders,” and a “Dragon-God,” not to mention David “Darth Vader” Prowse in the role of the barbarian hero. Subotsky wanted to do a Conan movie very early on, possible as early as the late 1960s, but he couldn’t get the rights. He settled for Lin Carter’s copycat, Thongor.
The article, from Starlog #15 (August, 1978), has Thongor: In the Valley of the Demons slated for a July 1979 release, but it was not to be. Both Clash of the Titans and Conan the Barbarian were in development, and Subotsky couldn’t get the money he needed to compete with the talent involved (namely, Ray Harryhausen).