Finding this rock outcrop was fairly straight forward. Spotting the carvings was a different matter!
I managed to make out a very, very worn cup with three rings, a possible cup with two rings and a cup with a single ring. The latter is the best defined of the design. The Louth Survey says there are ten motifs on the panel and mentions a checkered design on a neighbouring section of the outcrop. I couldn't see anything near to this level of ornamentation. The south end of the outcrop has been quarried away, so who knows what has been lost?
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.