In reply to BigLob:
It's fairly popular as a bad-conditions, get-something-done winter crag for instructed parties.
There are some old rock routes on the steeper towers, nowhere recorded, likewise a bunch of bouldering, some of which was in an old local guidebook by G2 Outdoor.
I've used it in winter and looked at the bouldering (and not bothered), never tried any of the old trad lines, but the fact that virtually no one does probably tells you all you need to know.