Mostly good quality quarried gritstone. Can be sandy in places. Some fantastic routes equal to peak classics. Mohammed the Mad.... is unmissable at VS 4c as is Splash Arete at VDiff. Flick of the Wrist and End of Time are superb and tricky E2s. Generally the routes have a bold feel to them; protection can be sparse and the fixed gear is often poor. The quarry does not deserve the poor reputation it seems to have despite the steady influx of summer visitors. There is also some very good but limited bouldering.Bouldering topo available here: http://www.vimeo.com/groups/UKBouldering/files