Kuwaq Yaku – The Forge DLC
Side Mission: Echoes of the Past (part 4)

Once you've defeated all of the wolves, be sure to loot them for regular hides and special black wolf hides (a.k.a. "sparkle fur"), which is used in outfit crafting and fetches a good price from merchants.

Now to climb out of the ruins. Start by scaling the climbable wall on the east side of the cavern.

Climb up as far as you can, then scramble up the smooth wall and grab the narrow ledge above. Climb around to the right. Then jump/axe climb onto the ledge at the top.

Enter the passageway ahead and pick up some cloth and random supplies. Climb the steps on the left cautiously.

There's a concealed spike pit just ahead. Jump over it.

As you continue along the passageway, Lara contacts Abby on the walkie-talkie and tells her to look for a stone fragment similar to the one Lara found here. After the conversation, jump over another spike pit to reach the climbing wall above. Climb up as far as you can.

Then jump to the next climbable wall on the right.

Climb up until Lara is hanging onto the narrow carved ledge. Climb to the right...

...and around the corner. Then scramble up the carved wall onto the ledge above.

Move forward and jump across the opening in the floor above where you just were.

On the other side is the little room behind the wooden bars that you glimpsed when you first entered this area. Gather the various resources here and use the jaguar-head handle to open the bars so you can get out.

Grapple-swing across to the entrance and interact with the circular stone door to exit the ruins.