|Carrigeenshinnagh - Rock Art|
A lovely round boulder with a single bullaun place firmly at its centre. The boulder is 1.5m x 1m and lies next to a modern fence near to the bottom of a south-facing slope. On the opposite side of the stream below the site there are two rock art panels (see Carrigeenshinnagh (County Wicklow) and Drummin (County Wicklow)).
The single basin is about 30cm in diameter and 15-20cm deep.
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.