Hallway is a secret dark map with physical sightings of Mörkö. The tunnel itself is a long hallway, with disturbing sounds and breathing that gradually gets louder.

Gameplay

This area is accessible by opening door B2 in the Bergmann tunnels, which in itself is quite a task. The door guarding B2 can be unlocked by a key found underneath a can on the east side of the tunnels, right before the action sequence involving the gates. Furthermore a fuse from the break area's storage room must be taken there and plugged in to power a keypad with the code 4027. Upon entering the pitch black hallway, Mark will encounter strange phenomenon. The flashlight isn't effective due to a heavy dark fog around the whole area. Upon reaching the end of the hall, the exit will be locked, and Mark will be ambushed by Mörkö, who places Mark in a storage closet in tunnel3, skipping the Pinefell Water Treatment Plant entirely.

Achievements

hallway
General
Map Name	hallway
BSP Name	infra_ee_hallway
Stalburg Map	hallway
Statistics
Photo Spots	1
Corruption Spots	0
Repair Spots	0
Mistake Spots	0
Geocaches	0
Water Flow Meters	0
Connected Maps
Previous Map	tunnel1
Next Map	tunnel3

Hidden Achievements

Icon	Name	Description
	???	???

Trivia

Depending on how fast/slow Mark is on navigating the hallway, he may be ambushed earlier than the end of the door, the result however, is the same.
Mörkö itself is photographable, yet yields no comment from Mark, and also makes it the one picture in the game impossible to photograph all spots.