If I'd have taken more notice of the photograph I have of this tomb we would have found it a lot easier. After hunting around in the field for a while I turned around and there it was hidden beneath loads of brambles right at the road side.
It is a lovely example of a megalithic kist. It has a roofstone measuring 2.5m x 2.2m that has slipped off the uprights and displaced the back stone slightly. Behind the backstone it is possible to see some of the drystone walling too.
The chamber is about 1m high and 1.4m deep.
To the east it is just possible to see the tops of the stones mentioned in the inventory as possibly being part of a stone circle that may have surrounded the tomb.
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.