Plot hole: Despite no one actually seeing the landing site of the meteorite, the sheriff takes his boat and the divers to the exact location of the rock. They go down and immediately find it.
The Crater Lake Monster (1977)
1 plot hole - chronological order
Directed by: William R. Stromberg
Starring: Bob Hyman, Glen Roberts, Mark Siegel, Richard Cardella
Continuity mistake: The senator is tossed out of the boat and consumed (with the exception of his head) by the monster, and yet the boat is full of blood.
Steve Hanson: All right. I'll give you twenty-four hours, but I AM gonna call in some outside help, because my first responsibility is to save human lives, not sea-serpents.