I had, unfortunately, read about this a few months after being in Stephenville for the first time. I marked it on my map for future reference with the idea that, someday, I would return.
We drove down the dirt road to the place I had marked on the map. From there, it was a short walk along the path until we found what we were looking for.
It was a long concrete building with multiple bays for the storage of ordnance. You could still make out the painted stencils on the wall indicating what should be stored within. Each bay had a heater, and one room in the centre of the building featured the remains of a furnace and the other mechanics of maintaining the building.
It is interesting that this bunker was built so far away from the rest of the airbase. There are other bunkers around, but they are closer and of a different design. Perhaps the ordnance kept here was something more dangerous.