After seeing the south cairn this was an added bonus, because this too has a large open kist burial at its center.
The mound is much higher than the south cairn and much larger, probably 15m in diameter and 2m tall (with the top missing).
The chamber is a massive 2m x 1m and 1m deep.
I couldn't remember the standing stone to the west of the cairn when I saw it today, but on seeing my previous notes I realise that I saw it through the fog. The neighbouring cairn has a stone in a similar position, so I would say that there's definitely some meaning behind them.
I will not include directions for these sites. If you wish to find them then I recommend a good compass and an OS map. Even better a GPS.
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.