lionhead

Factual error: About an hour into the movie the plane with our heroes in it is being chased by a pyroclastic flow from the Yellowstone eruption. The flow at one point fully overtakes the plane. A pyroclastic flow is comprised of hot gas and rock sometimes over 1000° Celsius. It not just dust and smoke. The plane would have been ripped apart by both the temperature and the fast flying rocks. Instead it came out of the flow without a scratch.

lionhead

Factual error: Little over an hour into the movie, Yellowstone blows up into a huge volcano. The pyroclastic flow that follows the camper is going at such a speed (the speed of the flow can be seen when the plane is in the air) that it would have overtaken the camper well before it has reached the plane. Even if the cloud would have been slowed down by hills, it would have, after the camper reached the plane, overtaken the plane long before it could take off.

lionhead