The Northern Ireland monuments record states that this tomb has gone. Well, it hasn't! There isn't much left of it, mind, but there's enough to match it with a 1940s description.
The dry-stone walls in this area are very well maintained, although some are suffering since the landowner died recently. In the corner of one field, next to a trackway, there is a raised triangular area that is oddly walled in. The inside of this is full of large boulders and at places around the edge large stones can be seen that are from the tomb's structure.
However, it is on the edge facing onto the track that the real proof of the tomb's presence can be seen. Here we have two large stones that mark either the entrance to the gallery or, more likely, the entrance to a subsidiary chamber. Behind these two stones several large slabs can be seen forming a chamber, which is full of large stones. It would be nice if this area was cleared out.
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.