In reply to Frank the Husky:
I've done it - but not recently (mid 1990s with Andy Newton and a very young Will Perrin). It's... interesting - and you know what that means! Technically very easy but rather unnerving. A very good description in the Paul Williams composite. Rightly Paul points out that wetness 'greatly enhances the difficulties' (just love 'enhances', don't you?) Seriously, wouldn't go on it unless bone dry (thankfully it was when we did it). Re route finding, I remember there was a very tempting blind alley at one point (pitch four or five?) You really wouldn't want to go up it. Perhaps Paul's final words say it all, '... then descend the incline to collapse in your car!'
A great experience. Everyone should do it.
Mick