Templenaffrin : Bullaun Stone

Grid RefH 101 388
GPSH 10097 38807 (5m)
Longitude7° 50' 41.64" W
Latitude54° 17' 52.28" N
ITM east480366
ITM north584435
Nearest TownSwanlinbar (14.7 Km)
OS Sheet26
UTM zone29U
UTM x449041
UTM y5761192

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Templenaffrin - Church
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Visit Notes

Monday, 9th April 2007

I was not at all prepared for the scale of this monument. As I rounded the rocky knoll which lies to the east of the stone and separates it from the nearby church, I couldn't believe that the huge boulder in the base of the valley could be the purpose of my visit. Not only its size, but the fact that it was not quite where the OS map marks it also put a little doubt in my mind. The 'fairy thorn' growing next to it dispelled some of by doubts, though, and I went to check it out.

As I approached I couldn't see any basins in the upper surface and I though I'd have to carry on searching. However, when I got to the stone and looked properly I could see that the three massive basins were full of moss and had brambles growing from them - no one has been here for quite a while, I've hardly ever seen bullauns in this condition.

The boulder is over 1m tall and 1m x 1m in plan. There are, as mentioned above, three massive basins. There is a very shallow depression that may just be the start of a fourth, but I don't think so.

The largest bullaun/basin is over 35cm across and 20cm deep. The northernmost bullaun seems to be a two-in-one. That is it looks as if a bullaun was ground into the bottom of an earlier one.

Like this monument

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A Selection of Other Bullaun Stones

About Coordinates Displayed

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.

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