>http://www.megalithomania.com/show_site.php?site_id=1216&image=3792

Is this one on a broken up outcrop? Do any of the designs continue on other pieces they could have broken off of?

The other site is positioned in a similar manner to British RA. The main design itself is a little hard to make out. Overlapping rings are quite common in Britain... the long groove is a common feature I've seen on Ilkley carvings, running down off the rocks surface. In fact it's likely to be grooveS, as the channel above which forks and joins again isolating a vaugely lozenge island of rock looks like it's part of the design. The short grooves apear to hug it's contour. Could be a natural feature of the rock that has been enhanced, which is also common in British RA.

The view from that rock looks splendid!