Blackstone I think was a niche stone. That's just speculation and is how I've set it up now. I go and look at it once or twice a day and then try and figure it out. There are bits that have broken off so it's easy to tell the original carved surface from later fractures. Many times blackness on rocks is attributed to lamp black - soot - from smoking torches. Coal makes a shiny black - soot is very much matt black. The Blackstone's been preserved by being used as a capstone in a drystone wall - that's kept it out of mud and away from the lighter frosts. There are deep clear carvings in the stone - the cupmarks - but on top of that - all over - is a pattern of tiny scratches. Little lines and small pits. http://www.themodernantiquarian.com/img_small/20179.jpg It certainly beats a ballista !
|