Secret laboratory

Fang's report found in Stash at Pripyat revealed that Monolith is a lethal illusion. Instead, there's a secret door in Sarcophagus which might contain the true answer to Marked One's questions.
== Walkthrough ==
=== Sarcophagus assault ===
Sarcophagus is full of Monolith troops, with at least 2 carrying M60, 3 M249 SAW (a rather uncommon gun), and 2 invisible ones (not just cloaked but truly invisible, except for the gun).
=== Optional escape route ===
If you accepted Strelok's PDA from Doctor, you might want to check the Wish Granter for the note and teleport. This will let you retreat back to the safe place, leaving the Shadow of Chernobyl finale for later if you feel it's too much for a single run.
You have two options:
* Teleport back to CNPP-1 by throwing a Goldfish into the Wish Granter. One Goldfish is guaranteed to spawn in one of the breakable wooden crates somewhere in the Sarcophagus.
* Teleport back to Army Warehouses by using Strelok's manual teleport you found near the Wish Granter, provided you have a Teleport artifact with you.
However, the blowout countdown in CNPP-1 will resume upon entering the location, and will only stop after destroying C-Consciousness. If you don't have enough time left, you'll have to wait until you unlock the alternative route to Sarcophagus in the quests following the Search for Ghost storyline.
=== Accessing the secret laboratory ===
The secret door is accessible through the inconspicuous passage with a rotating warning light above it. Enter it and climb up the ladder. Press F on the door to start decoding it. Decoding will take 30 seconds, during which 7 additional Monolithians will appear in the other end of the corridor from the newly opened teleport. One of them will carry a M60, another one will be invisible.
After decoding, the door will open. Proceed to the next location to solve The mystery of the Monolith.
== Notes ==
* If you finished Controller's brains for Lukash, you might also want to check his reward in a stash near the Monolith. It contains Monolith teleportation device ×5, and will let you teleport to the CNPP-2 immediately, to the station roof. This is a useful vantage point to clear out the location that is full of turrets and Monolithians, or to travel out of level boundaries and switch off the ground shakes to make it easier. See the CNPP-2 page for details.
** While you can teleport to CNPP-2 even before accessing the Monolith Control Bunker and speaking to C-Consciousness representative, there's little point in doing so, it's just more running around.
== Bugs ==