This is a disappointing stone! It's good that it still stands, but the Ogham is only just visible and not really legible.
The stone itself has almost fallen (luckily with the Ogham upwards) and is just 1m tall. When the crops in this field have grown to full height you will not see the stone from the gate.
Click Thumbnail to View Full Size Image
Take the N81 south until you enter Rathvilly and turn left. At the first cross roads turn left again and continue for about 500m. The ogham stone is 300m inside a field to your left about 80m from the southern field boundary.
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.