SCP-970

SCP-970 is an infinite hallway of rooms that you may encounter in game.

You can tell if you're inside SCP-970's containment if the fog on your screen gets darker, if you enter, you can find documents, a cup, or a Level 1 Keycard, or a navigator, if you can't find a Level 1 Keycard it's good to come here and find one.

If found in SCP:CB, you are awarded with the Recursive Spacial Phenomenon achievement.