In the middle of Big Dog Forest are two tall ridges, one is called Big Dog and the other Little Dog. On the top of Big Dog is a large stone, known as The Giant's Stone. With the dog and giant links I can only assume that there is some Finn McCool legend attached to this area.
I didn't have time to climb up t the top of Big Dog, but the stone is clearly visible, sitting on the ridge's highest point, from the road to the south.
The two hills do look like a pair of lying dogs in a funny sort of way.
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.