In reply to Seb2007:
I've been to Horseshoe recently (2 weeks ago) and it was not as bad as most people say it is.
-Yes, there is an active quarry across the road and explosions may shake up the rock a bit
-Yes there can be loose holds occasionally
- Yes some of the anchors are a bit rusty (also I found all of the ones I climbed on to be solid)
but
I found most of the routes enjoyable, especially on the upper tier section.
You even have what someone like me, who works in an office without windows, calls a view and on the day I went there where a few other teams climbing so it can't be that terrible after all.
After hearing so many "horror" stories about Horseshoe here in the forum and also in my local gym, I found the climbing to be really ok. Like everywhere else it is up to your judgement... Wear a helmet...