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 group go out to inspect the house damaged by the monoliths, the dirt around the rocks is white while the rest is dark. The professor squats down and picks up white dirt in his left hand and dark dirt in his right hand, then calls the geologist. In a close up, he opens his hands and the dirt colors have changed hands - the shot has been reversed.