Stay on the main path to Shantytown. As you may have noticed, Lara is quite seriously wounded, so for the moment she can't climb the higher walls or perform too many leaps in a row. When you get to the first hole, slide down and wait until she finds herself in the next area. Head north; Lara will see a helicopter, and you'll receive an update on your objectives (reward: 100 XP).
You are not permitted to copy any image, text or info from this page.
This site is not associated with and/or endorsed by the Square-Enix / Eidos or Crystal Dynamics. All logos and images are copyrighted by their respective owners.