As I walked down to White Park beach I could see a high, domed bump in the dunes, but it didn't fit the description I had read of this monument. I walked past it at first and after finding no other signs checked it out. This is definitely the site: the ring of stones around it and the stone set at the centre fit the description perfectly. The original description just didn't mention that there was still a mound here, too.
The exposed kerb is visible most of the way around the cairn. It is not at the monument's apparent base, however. This indicated that it was built upon a natural high spot, presumably rock, in the dunes. The cairn is 7m in diameter and over 2m tall.
The site overlooks the very important beach at White Park Bay, which is one of the places that the roughed out axes from Tievebulliagh were brought to be finished.
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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.