Started a random medium diff Apoc game eariler. Loaded up the base to see this..
May be hard to tell, but it's a 4-tall/8-wide base. The top right two slots are taken up by a Vehicle bay. This bay goes OFF THE SCREEN to the right, and 'continues' to the two middle squares just left of the Access Lift(Looks like blank squares).
First time I've seen THAT...