A Rhondda Cynon Taff and Neath Port Talbot hill, Twyn Crugyrafan is 559m high but is easily accessible with minimal ascent from the road that snakes over the ridgeway just beneath it.
I walked this hill alongside Werfa and Mynydd Caerau, ticking it off on the way back to the car. It is hard to tell the highest point, I took the cairn to be the highest point, but it may be further North towards the edge of the hill. I will be back for other hills nearby so might explore further at some point. Not very photogenic, at least not on this visit.