In reply to Mac B:
> (In reply to Ciderslider)
>
> This is getting a bit boring now, but Main Wall on Cyrn Las is the by far the most voted for.
Probably because
* It is at an accessible grade to all regular climbers.
* It's in Classic Rock which helps ensure traffic.
* Despite a reasonable walk in it is in a popular, well frequented area.
* It has a "big" feel to it, goes through unlikely ground for the grade and has some memorable moves and exciting positions.
* It's on good quality rock.
I'm sure many of the other suggestions in the thread are just as worthy, but because they are on unfashionable or remote crags (at least from the bulk of the climbing community) they do not get the same recognition.
Perhaps interesting to muse on why one I suggested earlier that is undoubtedly a true classic, has no other nominations (Exposure Explosion):
* It is at Ogmore in South Wales which is off the radar of many climbers (who sweep past on their way to the Pembroke honeypots).
* The cliff has a reputation for dubious rock and dangerous tides (although the route itself is relatively solid and not effected by tides).
* It is a traverse, and traveling sideways does not seem to have the same kudos as heading straight up.
* It is a major undertaking at a slightly less amenable grade than Main Wall.
It would be interesting to tot up the nominations and produce a ticklist, but if based on volume of nominations you potentially risk missing off some of the unsung classics for the reasons outlined above.