With a single step you cross the threshold, a long and empty hallway stands before you. There is soft florescent lighting set into the ceiling above, dull industrial carpet beneath your feet, and the walls are painted in a shade somewhere between a pea-soup green and goldenrod. On either side of the hall are doors and branching hallways leading off to unknown places.

Your thoughts remind yourself through the confusion "This was supposed to just be an office supply cabinet.", but quickly gets interrupted as the door shuts behind you. Even the sounds from the office you just left are no longer, you only hear the gentle hum of the overhead lights with the occasional flicker from a distant light.