The final gunfight is supposed to take place near sunset, but the shadows indicate an actual time of near noon.
During the final shoot-out, not only do the shadows change from long to short to non-existent, the cloud cover varies from full cover, to a few clouds and then to not a cloud in the sky.
When Dana asks Belle Breckenridge if he should ride to town to look for her husband, Bren O'Malley is holding a cup in his left hand and stroking the dog with his right hand. In the next shot, the cup is gone.
In the barn, when O'Malley leans in to kiss Belle, his head is tilted to the left. When he actually kisses her, his head is tilted to the right.
The depth of of the quicksand on Stribling's horse varies between shots.
Kirk Douglas shoots one of three Indians who are merely hungry and looking for cows for food. When Rock Hudson goes to pick up the "dead" Indian to return him to his tribe and try to avoid being attacked, the "dead" Indian assists Rock in picking him up and putting him on the horse.
Two of the dresses worn by Missy (the yellow one and the floral one in town) have zippers up the back. Not a goof: women's clothing in the 1880s was fastened with a series of hook-and-eyes attached to twill tape. The way this tape was sewn into dress and skirts is the same way modern zippers are sewn.
When the Yaqui Indians turn up the second time, as the first Yaqui rider pulls his horse up, arrows can be seen falling from his quiver onto the the ground to his right (screen left).
Dorothy Malone drives the single axle, 4 up mule Chuck Wagon for the Cattle drive to Texas.
In almost every closeup scene of Dorothy sitting & driving in the front seat, one can see her reins or a second set of reins, extending underneath the gap under the top most board past her and into the back of the cart.
Obviously, someone is in the back of the cart in case a dangerous situation arose driving along side a large herd of cattle.
When they reach the Texas/Mexico border she stands up & pulls the rear reins up with her. It then becomes obvious.
Most of the time she's seen driving, she spreads her arms just enough in attempts to cover the reins extending to the rear.
One can't blame production. It's safer that way. NEVER trust unfamiliar animals. They may be unpredictable.
In almost every closeup scene of Dorothy sitting & driving in the front seat, one can see her reins or a second set of reins, extending underneath the gap under the top most board past her and into the back of the cart.
Obviously, someone is in the back of the cart in case a dangerous situation arose driving along side a large herd of cattle.
When they reach the Texas/Mexico border she stands up & pulls the rear reins up with her. It then becomes obvious.
Most of the time she's seen driving, she spreads her arms just enough in attempts to cover the reins extending to the rear.
One can't blame production. It's safer that way. NEVER trust unfamiliar animals. They may be unpredictable.
This film takes place from Mexico to Texas. There are Joshua trees in the film and Joshua trees are indigenous to the Mohave Desert region of California, Arizona and Nevada only. There are none in Texas.
In the scene where you see the three Indians up on the bluff. As they ride to a stop you can see the middle Indian accidentally launch his arrow into the dirt.