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
Directed by: John Sherwood
Starring: Les Tremayne, Lola Albright, Grant Williams, Trevor Bardette
Continuity mistake: When the geologist and the newspaper man are talking in the lab, one moment the geologist is sitting upright, and in the next shot he is leaning forward with an elbow on the table.