If you loved Pompeii, try AVP: Alien vs. Predator
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Paul W. S. Anderson, and they both carry the raw mood tag, and they sit in Action / Adventure territory. If that's the register that drew you to Pompeii, the second film will land in a comparable space — through a different lens.
raw
What AVP: Alien vs. Predator is
Ice fields howling past a black pyramid half-sunk in the ice. Scientists descend into a buried arena where Xenomorphs and Predators reenact an ancient hunt. A single flare illuminates the wrong side of the mirror.

