A cautionary tale.
I was out on Stanage on Friday, I'd just done the first few moves of Parasite and was placing gear in the break, when a grapefruit sized lump of rock hit the crag about a metre to my left. Apart from the shock no harm was done.
I had a similar experience near Neb Buttress on Bamford Edge a while ago, but the disturbing thing about this incident is that the rock had come straight down the crag ie it had not been casually thrown off the top but dropped down it.
After untying and getting to the top, the likeliest looking culprits were what looked like an organised group of about 20 teenage kids, who we had heard passing noisily overhead earlier. They were a few hundred yards away by then , so I just left it at that. In retrospect probably a good idea, so that the impulse to bray somebody subsided.
Other recent posts have highlighted similar issues, so take care people, and be wary of lingering unseen at the bottom of crags. It saddens me to feel the need to post this.