I have looked for this panel many times. I have always concentrated on looking at all the small rocks that are scattered around the slopes here. For some reason I never thought to look at the top of the largest outcrop of them all. I honestly don't think that I would have spotted the designs on the one visit here because of the fog. Luckily Ken stumbled across it one day when he sat here to take a break.
Most of the markings are cupmarks that are scattered across the upper surface. There is one clear cup with a single ring at the north end of the panel and two faint cup-and-ring motifs towards the south. The surface around the simple cupmarks appears to have been pecked all over.
At the north end a group of cups seem to form a pseudo rosette pattern, but it's hard to be sure.
This is an explanation of (and a bit of a disclaimer for) the coordinates I provide.
Where a GPS figure is given this is the master for all other coordinates. According to my Garmin these are quite accurate.
Where there is no GPS figure the 6 figure grid reference is master for the others. This may not be very accurate as it could have come from the OS maps and could have been read by eye. Consequently, all other cordinates are going to have inaccuracies.
The calculation of Longitude and Latitude uses an algorithm that is not 100% accurate. The long/lat figures are used as a basis for calculating the UTM & ITM coordinates. Consequently, UTM & ITM coordinates are slightly out.
UTM is a global coordinate system - Universal Transverse Mercator - that is at the core of the GPS system.
ITM is the new coordinate system - Irish Transverse Mercator - that is more accurate and more GPS friendly than the Irish Grid Reference system. This will be used on the next generation of Irish OS maps.