Soviet Installation - Ancient Cistern Challenge Tomb

The entrance to this tomb is located just north of the ABANDONED SAWMILL in the Logging Camp area. Locate the log dangling from the crane...

...and shoot the hook block to drop the log through the planks below, revealing a circular shaft.

Climb down the ladder into the cave below. Even if you don't fully explore the tomb, this descent counts toward the Into Darkness Challenge (2/5) begun in the Installation Vista area.

Drop down several ledges, using Survival Instinct to spot a few magnesite deposits, and a mural (5/12). Lessons of Loyalty from the Byzantine Inscriptions series. Examine it for XP and Greek.

Backtrack toward the ledges where you climbed down, then head to the right (south) through the rough archway flanked by primitive wooden totems.

Follow the tunnel, dropping down twice as it descends. There's a relic (3/18), A Coin of the Realm from the Icons of Kitezh series, in an alcove just to the left of the next pair of totems.

The wall beyond the totems is climbable rock. Take a running jump across the chasm and latch on with your axes.

Climb around to the right and downward.

Move as far to the right as possible, so Lara leans out into the gap. Then jump and latch onto the next section of climbable wall.

Climb down and around to the left. Then drop down onto the ledge below. Crack open 2 salvage crates (not shown).

Then slide into the room below.

There's another relic (4/18) in the dark alcove on the left. This one is a Golden Icon from the set called Icons of Kitezh.