On the third floor I turned around looking for my wife and heard a clink. At this point I need to say that I was wearing full Saxon armour including a very large round shield and a 9 foot spear over my shoulder. I had wandered into the lighting section which was festooned with hundreds of lamps hanging from the ceiling and a very narrow aisle again with lots of glass on shelves.
I had a real problem extracting myself with a spear and shield and fortunately I managed to do so without any damage. I felt like a real numpty though.