Quicksand, on top of a hill?
Watching "The Mummy" on Spike right now. When the plane crashed on a sand hill, the 3 passengers survived while the pilot died. Then they jump back as the plane starts to sink, and they exclaim, "Quicksand!"
I thought you needed water to make quicksand out of sand? I realize it's just a movie, but it's just too incongruous, particularly since there was no necessity to the story for the plane to sink. In addition to that, only the fuselage sank, and not the broken off wings nearby? That's some very localized quicksand. Weird.