During the eruption scene at several points most notably when the people were fleeing the tsunami, the lava bombs were seen coming from the opposite direction of where the volcano was located.
When "Milo" is calming the spooked horse down, his head hight moves position against the horses nose.
At the time of the eruption the summit of Vesuvius was a rock dome, and the crater only appeared afterwards.
Pompeii is not located between Mount Vesuvius and the coast. The volcano is northwest of the city, while at that time, the coast was just to the west. The location of Pompeii in the film is more consistent with Herculaneum.
When Cassia's father examines the damage to the amphitheater, he comments that it has stood for 100 years. Pompeii has the oldest amphitheater in the Roman world - it was built in 70 BC, so would have been almost 150 years old AD 79.
So, at least a hundred years then. He's making a passing comment, not giving a history lecture.
So, at least a hundred years then. He's making a passing comment, not giving a history lecture.
In the beginning of the movie, young Milo, crawls out of a heap of dead bodies. You can see the hand of one of the dead bodies clearly moving.
That's because Milo is crawling over top of that body and his weight moved its hand.
That's because Milo is crawling over top of that body and his weight moved its hand.
When Corvus puts out his arm with clenched fist, about to give the order to kill Milo and Atticus, he does so with his fist horizontal. In the next shot it is vertical. Then, in the following close-up shot, it is once again horizontal.
That's how the "thumbs up-thumbs down" thing works, by moving the fist.
That's how the "thumbs up-thumbs down" thing works, by moving the fist.
At 1hour 17 minutes in the boat scene where Graecus is trying to flee with the others, he is knocked off his feet when the boat is hit from flying debris and is sinking the water washes over him and must knock off a wig that he must wear throughout the film (apparently rich men wore wigs as well as women in Roman times) revealing a modern hairstyle.
In the many thousands of years people have had hair, every hairstyle possible has been tried out. There's no such thing as "a modern hairstyle". It's been done before, in this case, by Julius Caesar.
In the many thousands of years people have had hair, every hairstyle possible has been tried out. There's no such thing as "a modern hairstyle". It's been done before, in this case, by Julius Caesar.
When young Milo crawls out of the pile of dead bodies, one finger on a hand partially flexes.
Corvus has a bust of the Emperor Hadrian on display in his military tent. Hadrian was emperor from AD 117 - 138, and would have only been three years old at the time.
When first talking to Cassia in the balcony, Senator Corvus refers to Rome as "The Eternal City." Yet, the nickname was not coined by the Romans but by the Christians, much later, when Rome was already the seat of the Papacy.
Horse riders in the movie are seen using stirrups, which were not known in Europe until the Middle Ages.
Nearby cities such as Herculanuem and Oplontis should be visible in some of the bird's eye shots of the area.
When Cassia and Ariadne when traveling from Rome to Pompeii, as they first see Pompeii, the Mediterranean Sea is on their left suggesting that they are traveling north toward the city with Mt Vesuvius in the background. Since Rome is north of Pompeii, Mt Vesuvius should have been behind or to their left as they traveled south along the Mediterranean coast, which should have been on their right side as they approached the city.