As soon as I read about this site I just had to come here. With all my other trips to Antrim taking me to different areas I thought I'd never get here.
This is a special site. The cairn is 3m high and 30m in diameter. 10m outside of the edge of the cairn there is a low circle of tightly packed stones. This could be a later enclosure. If it's the original kerb then this was a massive cairn! The ring of stones around the monument made up of an inner and outer ring of stones set about 50cm apart. There doesn't seem to be an entrance.
On the top of the cairn you can see a few large stones exposed that may be from a chamber. There are also a few hollows where material has been robbed away. There is an OS trig point on top of the cairn and next to the base of this you can see a rectangular arrangement of stones. These are the remains of the schoolhouse that was built on top of the cairn and gives the site its name.
The views are amazing and the farmer is a really nice chap. This site is definitely one to see. I know cairns aren't very exciting, but this one's so odd and the views so good that it's worth a visit.
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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.