Just to clarify my books about Megalithic monuments in different counties in Ireland. I use OSI maps, Heritage Site Finder and old documents from R.I.A. to find and visit these places and i do not 'follow' in the foot steps of others, as i find their co-ords are normally inaccurate. It is great that others have visited these wonderful places before but to say i should e-mail some one to let them know i am or in some way ask their permission is absurd. I gladly give any help to others who may wish to use my informatiom without charge and with great satisfaction to help promote heritage in all of Ireland. I will in due course have other books available which will include NI as i regard it as being part of the whole prehistoric history and landscape of this island.