In reply to Choss:
That's funny. I think that's down at Gandalf's nr Haresfield. Apparently the same people who make the mats made a guide to the bouldering round them parts. Not seen it, but one has to take one's hat off.
Right, finish coffee, for the pelting rain over Sheffield has just stopped, the sun has come out, and I'm off to Stanage for a crack at Goliath's Groove. Not that that has got anything on the bouldering at Gandalf's, of course.