In reply to Mike Whittaker:
Drive up the pass from LLanberis towards Nant Peris. Just before the start of the village is a large lay-by on the right. Park Here.
Walk into the Nant Peris Parc and it's the first buttress of rock on your right after about a minute's walk.
The buttress is formed by a steep 40ft arete on the left, with a finger crack and two ancient pegs. To the right is a corner with a large steep broken crack. Just right of this is a 10ft hanging arete with a hard problem I think 6a, just right is another arete, which is about 5c. It's right of this small arete where bolts and damage are - only six feet from the ground!
Hope that helps - I'll try and get a grid ref later