Right, I've just added a new sight to the Tal Y Fan area, but don't have a clue what it's called. I've seen reference to it in books, but without any given name. Frances Lynch only refers to it in relation to Maen Y Bard (it's only 100 metres away) in her CADW guide, 'Gwynedd'. Cope mentions it, again in relation to Maen Y Bard. If anyone can supply the correct name, I'd be grateful. Otherwise it's just Rhiw Burial Chamber!