The Hidden City – Side Mission: Hearts and Minds
Retrieve the Savior's Amulet (part 1)

After completing the first Hearts and Minds Side Mission, Retrieve the King's Horn, Lara agrees to help Uchu again by going after the Savior's Amulet, said to be hidden in the crypt of Manko the Peasant Savior. The entrance is purported to be somewhere near the white tree, just south of the Fishing District Base Camp. To Find the White Tree head to that camp now.

You may have already explored this area while searching for collectibles. Climb the tree near the campsite. Then Climb the Cliff by first jumping to grab a handhold on the rock wall. Climb onto the ledge above.

Turn left, and jump over to another set of handholds. Climb to the ledge above on the left.

Here you'll find a condor's nest, which you can loot for feathers and/or the Keep Calm and Carrion Challenge. Use the horizontal branch to swing over to a handhold on the wall beyond.

Then scramble up onto the ledge.

If you didn't get it before, you'll find a document (8/42) The First Emperor (Quechua/Founding Paititi) sitting on a stone block. At this point, your objective is updated: Enter the Cave. Climb into the tunnel opening and squeeze through the narrow gap.

Scramble under a spear trap that has already been triggered.

Jump over the spike pit beyond the spears.

Then pick up some supplies and examine a document (23/42), The Cult's Control (Subjugating Paititi), before continuing along the tunnel past another spear trap.

Beyond the spears is an apparent dead end with a mural (16/23), The Peasant Savior (Quechua/Subjugating Paititi). Examine it...

...then break through the crumbling wall on the left to access a hidden passageway.

Now to Search for Manko's Remains. Advance carefully along the dark passage. Cut the tripwire to trigger a spear trap.

Scramble under the spears, but don't rush forward; there's another tripwire just ahead.

Cut it to trigger the next set of spears then scramble past them.

Enter the open courtyard with gold and turquoise decorations. On the right is a box with a relic (17/28), Golden Effigy (Quechua/Cult of Kukulkan)...

...and on the left, a document (24/42), Protection (Quechua/Resistance).

Climb into the rectangular opening to the right of the document.

Follow the dark passageway to another courtyard. Go through the low opening on the right...

...then another partially closed door...

...into a small, dark room containing some gold ore. Return to the previous courtyard the way you came.

Now continue through the wide doorway to the right (north) and proceed down several short flights of stairs.