Littlestone wrote:
Absolutely not. Unnecessarily adding anything to an object is considered by all professional conservation bodies as bad as taking anything away from it.
I'm talking about things like this concrete pillar - http://www.megalithomania.com/show/image/5651 - when you add something to stop a thing collapsing what should you do? Make it subtle (from a distance) and mark it, or build a redbrick pillar (such as at Ty Newydd) that everyone moans about?There are stones at Knowth that would easily be considered as original if they weren't marked with OPW. As Knowth is one big circus attraction anyway it probably doesn't matter so much there.