Thanks for the reply George.

The sites are (a) Maulatanvally circle, (b) Knocks S circle, (c) Knockatlowig row.

The row is east of the hilltop, but if you walk a short distance up and west you can make out Knocks S. Not a hope of seeing Maulatanvally from there, its too far off and behind trees from that angle.

[I've a small bunch of lines identified, unfortunately none intervisible. Only two lines have components, beyond the obvious circle/circle or row/row, that could be counted as similar, one has two points with similar (winter sol) orientation, the other has two points with cupmarks (maybe a third but could be natural). These features, for what its worth, only occur at those sites.

My sample was 28 sites of two or more grouped standing stones, in the Carrigfadda area of west Cork. No line has more than three site points, which, of course, could easily occur randomly. Some sites appear on a couple of lines and one line of three sites also contains the peak of Carrigfadda.]