"Descent into the Valley" -- hidden objective "Find the safe entrance to sub level 2".
The lift found within this room is "broken", meaning that the "safe entrance" is inoperative.
Edit: Not actually broken; this hidden objective trigger is misleading as it is trivially accessed from the "wrong" side -- this is particularly confusing as the objective is initially hidden from the player. Here's the "correct" way to trigger this objective: https://www.youtube.com/watch?v=nkX8oi-hBIY&t=73
"Descent into the Valley" -- hidden objective "Find the safe entrance to sub level 2".
The lift found within this room is "broken", meaning that the "safe entrance" is inoperative.
Edit: Not actually broken; this hidden objective trigger is misleading as it is trivially accessed from the "wrong" side -- this is particularly confusing as the objective is initially hidden from the player. Here's the "correct" way to trigger this objective: https://www.youtube.com/watch?v=nkX8oi-hBIY&t=73