'Tinnahinch 2' : Stone Fort

Grid RefN 361 099
GPSN 36080 09870 (3m)
Longitude7° 27' 38.94" W
Latitude53° 8' 17.39" N
ITM east480366
ITM north584435
Nearest TownTullamore (15.4 Km)
OS Sheet54
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 25th April 2010

This cashel is more difficult to find than its neighbour just up the hill (see Tinnahinch 1 (County Laois)). It is not in a better condition, though. The outer limits are better defined, but the traces of any stone walls are a lot less obvious than at the other site. The only place I could find them was below the electricity poles that run across the southwestern edge. This material could be spoil from when the poles were erected, though. The farmer told me that they used the fort platform for the diggers when they put the poles up.

The site is on a small shelf about halfway down the hill from the other cashel. It is a raised platform that stands about 1.5m above the surrounding land. The ditch is shallow and not very wide, but is still visible all around the site.

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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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