Entrance into hillside above old Victoria Barracks NAAFI [????- ]
If you walk up Justice Drive, you may notice this retaining wall with a door in it. (The wall is roughly opposite the turning on the right that goes to Pacific Place & The Marriott Hotel.) You can see the door in the centre of this photo:
I don't think so - the Battle Box and its entrances were further west, and were destroyed during the construction of Pacific Place.
Almost forgot, the cage door by the naaffi was a store room, nothing else. It was great though, at night we could reach in and steal anything in arms reach ( cream soda, crisps e.t.c. ) and have midnight feasts on the roof of dragon house.