Summit Forest - Wolf Cave

The exit from this room is high on the wall opposite the entrance. To reach it, climb the yellow ladder to the top of the wooden platform.

Shoot a rope arrow into the hanging deer carcass.

When Lara pulls on the rope, the deer swings toward her then back into the metal armature, causing it to swing around.

Before it can swing back to its original position, jump to grab the horizontal bar and then immediately jump to the climbing wall ahead. If you don't make it the first time, just climb back onto the ledge and try again.

Once you reach the rough wall, climb to the top and continue into a small cave with an altar. You receive 100 XP for your efforts.

Pick up the area's final GPS cache (5/5), which is hidden in the pile of bones. Burn the 2 salvage nets and then crack open the crates plus 2 more salvage crates that were already sitting on the floor.