When the sheriff arrives in the SUV, you see the front license plates, the next scene when he takes his daughter back to the station, the license plates are gone. Throughout the movie, they are gone or back on.
When the truck plunges off the mountain road, the deputy who was riding in the bed is absent.
When the Sheriff's secretary gets the turquoise necklace, she puts it on, but when she jumps from the truck the necklace is gone.
The bent rifle found on the construction site is clearly not the one used at the beginning of the movie. The model weapon is different, and the stock is not the same color.
The bent rifle is obviously rubber or plastic. The wooden stock clearly follows the bent barrel instead of being shattered.
Gil Gerard does play Big Jim, not Seth Pomeroy, although the two actors do resemble each other slightly.
Gil Gerard did not play Big Jim as stated in the closing credits (and the IMDB cast list), he played Seth Pomeroy. His character's son, Dex Pomeroy, is listed as 'Dirk' Pomeroy in the credits.
Incorrectly regarded as a goof, Alabama Hills does not refer to Alabama, so there is no error in geography. Alabama Hills is a desert region of North Los Angles County.
Everything occurs in a semi-desert area, but it is stated that it is in Alabama. There is no desert in Alabama.
The chief says; "It is Indian for grapevine." No self respecting American Native would say that. He would identify the appropriate language.
When the sheriff and his deputy find the bent rifle at the construction site, they proceed to hand it back and forth, with bare hands. No law enforcement person would ever handle evidence in such a way, as any forensic evidence would be compromised.