Somehow this old boundary stone has found its way to the summit. The "H" stands for the Howard estate of Graystoke. I didn't look, but I'm confident that there is a letter "M" in the opposite side which indicates the Marshall estate of Patterdale
Yes, I know there's an "M" on this side as well, I simply assumed that along with everything else this was just graffiti; obviously done before the advent of the spray can. I can just see a group of board teenagers walking up here in 1830 armed with their hammers and chisels. Not exactly the cut and thrust of modern day graffiti where you can nip in, spray your initials and then run off before you get caught. Nevertheless I'm sure M, ER and JW all walked away feeling like they'd successfully rebelled against something.