A tricky puzzle but really good nonetheless. It took me a week of lunchtimes to identify the majors, and I then had to solve the sudoku. Great fun.
That was back in April. Then at a CITO event in Woking in May I happened to get talking to somebody (El-Jo) who had also solved it but had just DNFed. I checked again last night and saw that they had later found it. So as I was coming to Kent today I thought I'd give it a go.
We parked up some way off and had a nice walk to the GZ. My son had great fun crunching all the acorns. As others have said I'm sure this shouldn't really be a terrain 1 (but please don't change it as it fills in an empty slot on my matrix).
This was our 4th puzzle of the day. No DNFs yet - would this be the first? There seemed to be loads of possible hiding places and the GPS just wouldn't settle down. It wasn't looking promising, but incredibly I found the cache in the first place I looked.