The bunkers you see once housed ammunition for the base. Now they are rented as a storage area and some just stand empty.
The cache is hidden in an ammo box. There are various items to trade.
Getting to the cache area might be a temporary challenge, but as geocachers I know you will find your way! You do not have to cross any fences or go off-road to get to this cache. You'll know you are in the right area when the photo above looks really familiar!
UPDATE 030904 - Seems the old container was carried away in a cleanup of the area. Placed a new one, should be an easy find now!