There is many locked doors that we can't access. Emergency exit in the generator room. The staircase, where are tow locked doors, one at the bottom, one upstairs. A door in the office (think it would lead to the bridge, left of the dam entrance?). And the entrance to WR, on top of that door is a balcony, with windows and a door. There's clearly a lot more areas in the dam, that we can't access. I hope the developers let's us access these areas in the future. Maybe you could open these doors only during aurora? But yoy'd have to get out before the aurora is over, or you're stuck.