My secondary school was built on a steep hill, hence there was an extra basement floor on the downhill side, although unlike a normal basement, this didn't sit buried below the ground, but instead opened out onto the playground.
In the sixth form common room, which was located in the basement, we found a pair of padlocked wooden doors, which gave access to a place with no windows that could be seen from the outside of the building. It wasn't long before the padlock became the padunlocked and we entered into the darkness onto a hard-packed dirt floor, which got closer and closer to the ceiling, the further we entered and the more progress we made.
Eventually, it was in places maybe 300mm to 400mm in height, which meant crawling. We could see a light in the distance so we
had to find out where this would lead to. So, more crawling which must've made our navy-blue uniforms look exceptionally crisp.
It transpired that we would emerge from a storage void behind the kilns in the pottery classroom.
The pottery teacher happened to be my form tutor and was actually v.cool
so we didn't get into too much shit over what we'd done.
I think she was just bemused to see three or four dust covered thirteen year-olds emerging from behind her kilns.
From entrance to exit it must be a distance of 80m or so - it was a big school, and we'd effectively traversed an entire wing whilst under the floor.
Thinking about it for too long today, makes me go a bit like Jaded ^
I'm not, and for some time haven't been, overfond of enclosed spaces for any significant length of time.
