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: Very plausible. The suits exist - they are called glide suits or wingsuits and lots more info can be found with a quick Google search.
Guy