As it was me who originally raised concern about Mayburgh I will reply.
As I said, I have not been to this site yet. I may go this weekend if I get time.
It was the postings by a previous cacher that drew my concern:
"November 21, 2002 by SHARPEY (5 found)
found this cache on second attempt,first to find it. Good site although very busy hard to look inconspicuous when looking under every rock on the site...T & L "
OK this was some time ago.
But my point is:
The owner of the cache may think they are being as responsible as possible. But it's not outwith the realms of possibility to think that an enthusuiastic cache searcher will be (how shall I put it) more rigourous than an archaologist?
As previous posts on this subject, we should hear what the guidelines should be. But I just think this should be borne in mind, that's all.
Here endeth