MURAL 1 - Huascar, The Syncretist (Resting Places)

This mural is found in the crypt of its namesake, Huascar, The Syncretist. The crypt can only be accessed during or after completing the Star-Crossed Side Mission. If you completed the mission but missed the relic, start at the Mission Gate Base Camp and follow the directions for relic #2, to get back to the crypt entrance. Then follow the main walkthrough to reach the mural and climb back out. The mural itself is in the room just southeast of one with the sarcophagus. (Click screenshot to enlarge.)

MURAL 3 - God of Cocoa (Pantheon of Gods 3)

This mural is in the Thirsty Gods Challenge Tomb, in the room with the giant stone head, located between the tomb entrance and the water wheel cavern. If you haven't explored this area yet, follow the main walkthrough.

If you completed the tomb but missed the mural, fast travel to the Ruined Tower Base Camp. Then follow the directions for document #17. Continue along the path to the tomb entrance. Swim through the flooded tunnel, avoiding the eel, and surface inside the cavern. Climb onto the ledge and you'll see the giant stone head. Drop down and climb the stairs on the left to reach the mural. If that's all you need, return to the large pool the way you came. The directions for document #17 also show how to get back to the Ruined Tower camp. (Click screenshot to enlarge.)

SURVIVAL CACHE 1

This cache is in the wolf den near the entrance to the Crypt of Huascar, The Syncretist, south of the Mission. Start at the Mission Gate Base Camp and follow the road across the bridge to the southeast. Just beyond the carved stone heads and metal cross, turn right (south). Head down the slope, past relic #2, and across the gap in the cliffside. The wolf den is just ahead on the left. Watch out for respawning wolves. When the coast is clear enter the cave to find the cache buried just in front of the rock column. (Click image for more and larger screenshots.)

SURVIVAL CACHE 3

This cache is inside the Tree of Life Challenge Tomb. If you haven't explored the tomb yet, fast travel to the Deserted Cloister or Ruined Tower Base Camp. Then follow the main walkthrough.

If you completed this area but missed the cache (or any other collectibles in the tomb), fast travel to the Mountain Catacombs Base Camp. Then retrace the route you took on your first pass through the caverns in order to find what you need and get back to the base camp. You won't need to solve the puzzles again, but there will be a few stray Yaaxil trying to impede your progress. This guide with screenshots details the route.

The cache is buried just to the right of the ledge Lara grabs after sliding down the zip line. (Click screenshot to enlarge.)

SURVIVAL CACHE 5

The next cache is also buried on the bottom of the large pool, just south of cache #4. It's between the stone turtle and the challenge tomb entrance. Again, check the map and walkthrough for help zeroing in on its location. (Click screenshot to enlarge.)

SURVIVAL CACHES 7 & 8

The last 2 caches are in the Thirsty Gods Challenge Tomb. If you haven't explored this tomb yet, fast travel to the Deserted Cloister or Ruined Tower Base Camp. Then follow the main walkthrough.

If you raided the tomb but missed either of these caches, fast travel to the Flood Basin Base Camp. Go through the doorway to the west at ground level (or, if you didn't pull down the wooden barrier earlier, climb the ladder) to reach the water wheel cavern. Then hop across the floating platforms to the north side of the pool, in order to avoid the piranhas.

To retrieve cache #7, swim along the west side of the pool, where the piranhas don't go. The cache is buried on the bottom of the pool below the waterwheel. (Click the first image for more and larger screenshots.)

To retrieve cache #8, start on the floating platform just in front of the tower entrance. Swim down into the submerged alcove at the front right corner of the base of the tower. As long as you don't go too far to the right, the piranhas shouldn't bother you. The cache is buried near the back of this alcove. (Click the second image for more and larger screenshots.)

To get back to the base camp, you'll need to raise the water level if you haven't already done so. Swim back to the floating platform on the north side of the pool. Climb the wall on the left and make your way along the ledge to the rotating handle in the southwest corner. Turn the handle counterclockwise and the pool should begin to fill. Then swim back along the west wall to the floating platform on the north side of the pool. Hop across the other platforms to the southeast corner and go through the doorway. (Use a rope arrow to pull down the barrier if necessary.) The base camp is just ahead. From here, you can fast travel to wherever you need to go next. (Click the third image for more and larger screenshots.)