No, its not that far south. It right next to the last usable stair way to the platform. It is all walled in as it passes for the lower level, through the upper leve. This to prevent subwaysurfers from taking shortcuts. Check the doors to this walled off area. Signs reading "ELEVATOR DEPT."
From Peters photos the escalators look as if they've been cannibalized for parts.
I beleive there were two escalators. I'm basing this guess on Peters photos.