Fitz,
Bloody Nora, I must've walked past this countless times without noticing it. Next to the camp site too. Good lad. http://www.themodernantiquarian.com/post/50145
Bill Birkett in his book "A Year in the Life of Langdale Valley":- http://www.amazon.co.uk/gp/pro[...]ance&n=266239&s=books&v=glance
states on one page that he knows of various bits of previously undiscovered rock art in the valley, found during his many years of rock climbing in the valley. I'd love to know where he means.
Cheers,
TE.