GC4KPGV

Aha, THIS was the one I remember reading about. I'd solved whatever had to be solved ages ago, and could remember nothing about this cache when I found it in the environs of my weekend incursion up country looking for 5/5's. Previous log mentioned a useful piece of kit around the place, and when I looked for maybe a rope but found a full flight of stairs I was both bemused and delighted!

Up. Sign. Down. And out. Without being spotted I think.

Thanks for the cache.