Tullyskeherny : Stone Fort

CountyLeitrim
Grid RefG 896 368
GPSG 89634 36764 (8m)
Longitude8° 9' 32.98" W
Latitude54° 16' 46.18" N
ITM east480366
ITM north584435
Nearest TownManorhamilton (2.9 Km)
OS Sheets16, 26
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 9th May 2004

A short walk and visible from Tullyskeherny (County Leitrim), sitting on the top of a rise, is this small cashel about 30m in diameter. The walls now reach no more than just over 1m tall and were never much more than 1.5m thick. This doesn't seem to offer much protection to me, as wall this narrow could never have been very high. Perhaps its remote location was enough to warrant such a flimsy feeling structure. Perhaps it wasn't defensive at all.

The west side gains some extra protection because it is right on the edge of a small cliff with a 5m drop, 30m beyond which is another drop of 40m or so. The east approach is very open though.

There is an orthostat-lined entrance facing SW and oddly this is not at a right-angle to the centre of the enclosure. It seems to point at an odd arrangement in the opposite wall where a very regularly shaped stone is set, lintel-like, above a recess. It looks like a fireplace, but with no chimney it wouldn't have done a very good job. Just in front of this is an low oval cairn-type thing which may be a burial.

I was not totally convinced that this was a fort as such, or maybe it was originally, but was later adapted into a ceremonial enclosure. A very interesting site indeed.

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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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