A steel beam was dropped in place on the bridge, then everyone celebrated. In the next shot of Samuel celebrating, the beam is still hanging by the ropes behind him.
Cremation of Remington, Colonial Patterson's blood make up on his face/neck.
The visibility of Kareem's earlobe under his turban when Remington has a gun to his head.
Patterson climbs the tree to escape a lion that has blood which appears and disappears from its face.
In the dream sequence a woman is holding a real child, then in the next scene is holding a clearly fake child that is smaller than the real child was.
Mahina's (a Muslim) body is burned in a funeral pyre after he is killed and his fellow Muslim workers are shown praying at the event. Cremation is strictly forbidden in Islam.
In reality, Patterson killed both lions himself. The great white hunter Remington is complete fiction, and no one like that was ever present in Tsavo during the time the events took place.
The lions in the film are "normal" male lions with large manes. The actual man-eaters were "Tsavo" lions which means that the males do not have manes.
The locations in the movie are very rugged and mountainous. The actual location of the "maneater bridge" is a savanna with rolling grasslands, scattered hills and patches of scraggly forest.
During the camping scene with Patterson, Remington, and Samuel when they are celebrating the killing of the lion, the two prominent constellations in the night sky are Ursa Major and Orion. These constellations are not side-by-side and Orion does not show in the southern hemisphere during the winter season anyway.
Instantly recognizable polio vaccine scars are visible on the arms of several extras playing native Africans throughout the film. The vaccine wasn't announced until 12 April 1955.
In one scene, Remington tells Patterson that "We have an expression in prize fighting: 'Everyone has a plan until they've been hit.' Well my friend, you've just been hit." The events of this film take place in or closely around 1898, however the prizefighting expression used by Remington was coined by World War 2 era boxing great Joe Louis, who was not even born until 1914.
When Robert Beaumont asks Col. Patterson to build the bridge, the world map behind him shows countries like India, Pakistan, Sri Lanka and various African countries which were obviously not separate countries in 1896.
When Patterson loads his rifle for the hunt on his first day in Tsavo the ammunition has jacketed spitzer bullets. In 1898 the bullets would have been unplated lead.
Samuel's double barreled shotgun has plastic red shells It would not be until 1960 that the first plastic shot-shells were introduced; before then, shot-shells were made of brass or paper.
During Patterson's initial interview, one of the maps shows Alaska as part of the United States. Alaska was not admitted to the Union until 50 years later.
Reflected in Angus Starling's glasses during a close-up.
When Patterson is waiting up on his perch (with the baboon as bait), the familiar "Who-cooks-for-you" call of a barred owl (Strix varia), only found in North America, can be plainly heard in the background. Although there is a species known as the African barred owl, it is an entirely different species (Glaucidium capense) and is much smaller, with a call bearing no resemblance to that of the larger American species.
When Patterson is walking in London with his wife, the Pretoria Palace of Justice can clearly be seen behind his wife's shoulder (the film was partially shot on location in South Africa in 1996).