Proper gnarly. And hot! Take pads, tough tyres and decent suspension. I did it on the spur of the moment when on a family holiday a couple of years ago, so was ill equipped and on a mediocre hire bike (Canyon Spectral base model), without guiding, just going out exploring from our villa and it was still great, despite using Converse trainers on pin-less flats with no knee pads or gloves. I found one old hill track which was like a continuous rock garden, never seen anything in Wales even half as rough. There’s built stuff too, I found berms and jumps and even a small bike park above one town.
