Revealing mistake: When the monoliths are getting close to the river bed, in two of the close ups when the monoliths fall the "ground" bounces.
The Monolith Monsters (1957)
1 revealing mistake - chronological order
Directed by: John Sherwood
Starring: Les Tremayne, Lola Albright, Grant Williams, Trevor Bardette
Continuity mistake: When the geologist parks in front of his office, the back of the station wagon is a good six feet left of the door. When the newspaper man walks across the street to visit, the back of the car is now even with the door. In a later scene when the other geologist arrives, the back of the car is once again about six feet from the door.