I noticed this one not long after I started caching four years ago; I knew exactly what I'd have to do but never actually got round to doing it until just a few weeks ago. A nice puzzle - I guess it's one of the earliest in this area - and really satisfying when its finally deciphered.
I noticed that there was a guided tour by the Surrey Wildlife Trust here today (the ranger was showing us the pigs that they had introduced this morning in order to keep down the bracken). So we decided to combine that with a visit to get the cache.
I thought the cache was going to be quite tricky to find, but when I arrived at the GZ I spotted it straight away. Some water must've got into the cache as the logbook was sopping wet but I just about managed to sign it.
A lovely area - I might return another time to see how the pigs turn out.