Didn't ALL of the SCP's get moved to the site you are in?
I feel like there could be chambers scattered around the facility, but you can't enter them.
Maybe a broken door, broken key card thingy, rubble in front of doors, an entity making it impossible to enter, a catwalk with a door leading to a chamber at the bottom, or just an empty chamber. I mean, the building is huge, so it would make it seem like "UUUHHHHhh m8 weh he goo? Mlg swig"
This could add a cameo to 689 or 650 (650 went missing a lot in his story, so this would make sense).
Just a thought.
Containment Rooms
#1Don't worry about your son, he will be sent to the deep dark depths in no time.