Two massive boulders of immaculate rock featuring great traverses and classic problems, some of which are a little highball. The classic is the Caseg Groove V5.
[Needs map reference - UKC Ed]
Park at Gerlan opposite the shop, and go towards Ciltwllan and follow the hill up to the dirt track. Walk up and round the bend to an aluminium gate on the right. Through this, follow a vague sheep track that leads to a steep fern-filled bank. Go down to the river and across. The first boulder is a few meters in front, the second one a few hundred yards futher up the river.