Moss , maybe I'm being overly cynical about some Coflein entries but I think it's worth mentioning .The first stone is a big bugger for a stone row , particularly at that height .One may have been " displaced " , by nature or human hand is not suggested maybe it is just where it always was and never was part of the line of stones . The monument is described as being prehistoric ,funerary/ritual/religious , no evidence is provided for this judgement . Maybe F.Foster can answer the questions . What do you think ?
The coflein grid ref is SN066322,fairly close to the Figgis grid ref. (one and the same?) for the stone row, so you may be right and Foster joined up stones that were just coincidental!
The Presceli range is pretty exciting, and Figgis again says of the Cerrig Lladron hill-top cairn; (SN 06583208) A magnificent hill-top cairn, still nearly 7 ft high and with a massive circumference...Unusually this one stands alone. The line of summits crowned by cairns (of which there has been some discussion elsewhere) which runs east along the ridgeway is a remarkable sight" he goes on to say that the whole of the top of the Preselis looks like a linear cemetery. There are three enormous cairns at Foel Drygarn at the other end of course...