Nah, it's impossible in this version of the game (I don't know, maybe developers are cooking something with this)... Well, you can always use cheats to get there (Don't do it).
By the way, this is an elevator room just behind those blocked metal doors in The Bunker (you know, The Bunker that is just outside the base).At 3:33am some spooky Omega Kurfus appears in the corner of this room for a split second. Better watch this closely using that angle from the image you provided.