Kuwaq Yaku – The Forge DLC
Forge of Destiny Challenge Tomb (part 4)

Once you've raised the ledges surrounding the tower to the SECOND LEVEL, as shown in the previous section, enter the room in the center of the tower.

Pick up more supplies on the left. Then jump onto the counterweight on the right. This raises one of the ledges on the outside of the tower.

Drop down and run through the doorway on the left. Turn right...

...and shoot the gas jet with a fire arrow.

The explosion propels the ledges up and around counterclockwise.

As the ledges rise, turn around and run along the exterior ledges to the other side of the tower.

Jump into the doorway on the northeast side of the cavern before the ledges collapse.

Climb up to the wooden ramp just inside the doorway on the left.

Jump from the end of the ramp to grab the carved stone wall ahead. Climb to the left a little, pull up onto the ledge, and then scramble up the rock wall onto the ledge above.

Here you'll find another resource canister. You can also glimpse a mural through the opening above, but you can't reach it from here. You'll come at it from the other side later.

For now, jump back down onto the wooden ramp near the doorway.

Pick up more supplies on the left, near the jaguar-head switch, and continue past the switch and up the stairs to find a document (2/3), Mariana's Confession (The Hidden Past).