EDIT: I still have a save, so I can test this out further. This map seems to be wonked up in other ways as well. Chief Franklin was a Class-D in the "Agent! Behind you!" Scene.
The map seed is 7fwpx0jz.
EDIT EDIT: I managed to get in the room. The Light Containment Entrance leads to nothing. (See second screenshot)
MUDDERFUKIN EDIT: The Heavy Containment Door leads to SCP-372's room. (See screenshot 3)
OH DEAR GOD ANOTHER EDIT: The other room is the unreachable area in the checkpoint.
This is the last update, I swear.
Spoiler