Julian told me it was ok to give spoken directions but not to draw maps/write directions etc. After all I think it's private land and we dont want the hoards descending...
Incidentally I found a beautiful pollisher in the Archaeological museum in Nantes. Its only about a foot or so accross but it's made of this exquisite viened marbly stuff (Ive got a degree in geology you know) and the grooves, bowly bit configuration is very like the one up Fyfield way. It's definitely better than the Vannes museum one.