Hamsterley is defo worth a visit if you’re passing, as a few have already said avoid the official red route as there’s a lot of pointless fireroad climbing that can easily be missed out if you know how. Start on black from visitor centre until you reach a small bridge with the end of the nitrous trail on the right afterwards, then up to the K line and finish on the rest of the red. Loads of cheeky trails, some are easy to find, some pretty hard to find, most of it is on Strava. There’s also Danny Harts bike park although it’s pay to ride and full face helmet only, uplifts run pretty much every Sat / Sunday but I’d book in advance. Probably 50 / 50 between dh and trail bikes these days, bikes and full face lids can be hired at the bike park cabin