Trivia: Lara tells Terry that she will take "four minutes" with Chen Lo. The fight sequence between her and Chen Lo ends almost exactly four minutes later.
Trivia: The tribe at the end of the film was actually a real tribe, not actors.
Trivia: A man actually doubles for Angelina Jolie during the "squirrel suit" jump sequence - he is one of the two inventors of the suit, the other doubling for Gerard Butler.
Trivia: Director Jan De Bont was not allowed on the Luna temple set because he had recently injured his knee. The wet floor of the set posed a slip-and-fall hazard, so he directed the scene off the set.
Answer: The pressure in the temple would be the same as that of the water just before Lara entered the temple. So no she would not need to decompress before entering at the temple as it was open to the sea, but she would have surely suffered the bends on the rapid accent to the surface.