Reward: Shantytown GPS Cache Map
Head into the tomb and watch the left wall to spot the final GPS Cache 15 in some bushes and then continue. When Lara begins to fall, quickly press Square/X to save her and shimmy right along the ledge and climb up. Grab the Salvage and take the right path into the tomb.
You need to get to the craggy wall, but the platform nearby is weighted the wrong way. Grab the yellow canister and stand on the side nearest the fire and drop it. Now use the ramp on the left side of the area to jump to another and drop it on the seesaw as well. There are two canisters left, but you only need one. Using the rope dart on the hanging wheel, crash the wheel into either platform around the area to get the final canister. You can now run up the ramp and grab the craggy wall with your axe to reach the treasure.
