Here is a photo of another stone formation, this time it's a pyramid shape.(pic 1) I know the farmer so I'm going to go back for further investigation when his lambs are a little older.
A small pond on the mountain near Alltwen (we're going there Thusday Mrs Fester) looks like a bridge used to cross the water to the middle. (pic 2) This stone was near Alltwen too, you can tell how large it is in comparison to my lighter on the top (pic 3) Now does that look carved to you? It's shaped like a column, rounded and flat on both ends. Various other large stones scattered around it. Where was this from? The last photo is of a stone circle, not like Druids Circle but purposely placed stones never the less.(pic 4) The farmer uses this area for burning and those are not sticks in there they're branches. Look at the size of the rocks!