Players who love exploring every inch of The Zone inStalker 2: Heart of Chornobylwill come across some locations with either a door or a vault that’s locked. Unlocking these locked doors can lead to good loot, new weapons, oressential attachments of weapons. One of these locked doors can be found in the Tunnel Under Lake POI, which requires players to solve a minor electric panel puzzle to unlock it. Here’s the complete explanation of how you’re able to access the Tunnel Under Lake locked door.
How to Unlock Tunnel Under Lake Locked Door in Stalker 2
The Tunnel Under Lake location can befound in the Yantar region, northeast of the STC Malachite base and southwest of the Rostok Base inStalker 2. Approaching the location from the east side, you’ll come across the opening of the tunnel. There are some enemies that you’ll have to eliminate inside the tunnel before trying to open the locked door in Tunnel Under Lake.
Let’s check out how to solve the electric board puzzle to unlock the Tunnel Under Lake’s locked door.

Unlocking the Tunnel Under Lake Locked Door
After getting rid of enemies inside the Tunnel, you’ll head towards the left side, into the corridor,to find the locked door. There’s also another room with some switches thatcannot be flipped until the power is restored.
To restore power, go outside the corridor and look towards the left to find an electrical box with a red button. Pressing the button will restore the power to the breaker box inside. Head back into the room andflip all three switchesto open the locked door.

Now you can head inside the locked door to find the way blocked with some barrels. There’s a path towards the right that you can go through to access the stash beyond the metal barrels.
All Rewards in Tunnel Under Lake Location
Opening the stash, you’ll get some ammo and valuable consumable items. There’s also aSphere M20 Helmetthat you can loot from the stash to equip on your character. However, you can get more items in this area alongside the stash. Head into the corridor, go inside the room without a door in front, and look at the shelf on your right. You’ll find the following items on the shelf.





