Revealing mistake: When Lara Croft goes into the water near the end to try to save her male rival, Alex West, after he is stabbed and ground between the gears, when Lara stands up, you can see the make-up coming off her arm that covers Angelina Jolie's "Billy Bob" tattoo.
Revealing mistake: During the bungee scene it is meant to be night-time, but when the camera pans up to the sky light you can clearly see blue sky and clouds.
Answer: This movie left a lot of holes. It was pretty much: Lara knew what to do and she did it. Perhaps there are clues in the movie, but the book explains all the puzzles in much more detail (as books do). So if you are really interested in the deep puzzles of the adventure, the Tomb Raider book is what you should look at.
Coconut