Directed by Jack Bernhard and written by Robert T. Shannon and Jack Harvey, Unknown Island has Ted Osborne (Phillip Reed) and his fiancée, Carole (Virginia Grey), looking for dinosaurs. Good news. They find them.

Along with drunk Captain Tarnowski (Barton MacLane) and even drunker PTSD-having John Fairbanks (Richard Denning), who survived a previous dinosaur attack, they head out. Maybe Fairbanks wants to cuck Ted, too. Who can say?

When they get there, Tarnowski gets into the whiskey, starts shooting crew members and won’t leave the island until he brings one of these giant lizards back alive. And you know, as much as this is about dinosaurs, it’s also about how Tarnowski, Osbourne and Fairbanks all have it bad for Carole. So bad that they continually put her life in danger, but she can take care of herself. One time, when Tarnowski passes out, she grabs his gun and blows away a dimetrodon (which is not technically a dinosaur, but instead a reptile that went extinct ten million or more years before the dinosaurs appeared).

If you see some of these dinos and feel some deja vu, this footage was reused in the American version of Godzilla Raids Again and Adventure at the Center of the Earth. When the crew is firing grenades, there’s a bit of realism in that scene. The two-legged dinosaurs were actually rubber suits worn by actors in the hot desert of Palmdale. When one of them fell, it was actually the actor passing out from heat exhaustion. He died later and the film uses the footage. This is a dinosaur snuff film.

You can watch this on Tubi.