Towards the end of the movie Mulder learns Scully has been abducted and is held somewhere near the South Pole. At the time, where he is at, given the pictures, it's clearly not winter in the northern hemisphere, which means it WOULD be winter in the southern hemisphere, with accompanying near-continuous darkness. Yet when Mulder arrives in Antarctica, it's broad daylight with no snow falling. And in the dead of Antarctic winter, somehow it's warm enough for him to forgo heavy mittens, facial coverage, etc.

One has to wonder just which airline flight Mulder caught to Antarctica in the dead of winter, and what nonexistent airport he flew into. During that season no flights of any kind can get in--it's called being "wintered over."

Lastly, no explanation of how he came by the tracked snow vehicle--must have been a heck of a rental car upgrade!