Visited on my birthday (Dec 27) with our children (7 & 4) – the stream that must be crossed is the Tawe of Abertawe (welsh word for Swansea). Vowed to return again either without the children or in summer when the stream is not so high. Walked about to get a feel of the place & spotted the northern standing stone. Excellent. On return down the valley passed the ‘new’ stones at the entrance to Dan Yr Ogof caves & will explore when the caves are open again after the holidays. The caves are well worth a visit but a little overdone on the “son et lumiere” effects.