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Factual error: On Mars, Major Roy McBride boards the ship in violation of an explicit order; he damages the rocket and kills the two crew members. In the final scene, he is calmly thinking about his future in a bar. What he has done amounts to willfully disobeying a lawful order, wrongful improper hazarding of vessel, and constructive manslaughter. This is enough to sentence him to many years in prison, or even to capital punishment. As soon as he set foot back on Earth, he would have been arrested.

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Plot hole: Sometimes the cave heats up to the point that the ocean boils. One of these events killed Max a few years before, and the second half of the movie revolves around the main characters trying to reach a geyser, which is said to be the only way out, while another event is beginning. No explanation is provided for how the flora and fauna of the cave survive such events.

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Factual error: During the opening credits, we see three shots of a map tracking English's flight from Tibet to London. In the first shot, the plane correctly starts following the orthodrome through central Asia, but, in the next two shots, it is taking a meaningless detour over Africa. Furthermore, the labels are wrong: "Red Sea" when the plane is over Somalia, "Somalia" over Ethiopia, "Tunisia" over Libya. (00:04:59 - 00:05:35)

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Revealing mistake: When Mrs. Schmauss is on her bike, holding a wheelie and spinning after being almost hit by the car, while the other bikers are passing by, a support holding the bike up is visible. (01:29:01)

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Revealing mistake: In the close-up on the three French officers directing the bombing of Yorktown, the one on the left is trying to hold a laugh. (02:33:47)

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Factual error: When M tells Allan Quatermain that he and his team have four days to go from London to Venice, he answers that this is impossible, and captain Nemo replies that it will be possible thanks to his science-fictional devices. Actually, on late 19th century railways, this trip would have taken less than two days. For example, the Peninsular Express departed every Friday afternoon from London, and it arrived at Brindisi, a considerably more distant town in southern Italy, on Sunday afternoon. (00:16:39)

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