Radergan : Standing Stone

Grid RefH 554 646
Longitude7° 8' 39.28" W
Latitude54° 31' 36" N
ITM east480366
ITM north584435
Nearest TownOmagh (12.5 Km)
OS Sheet18
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 8th June 2003

After visiting Grania's Cave (County Tyrone) I returned to my car and was about to beat a hasty retreat (I really did feel that my presence was not welcome, possibly because they were all busy gathering silage) when the woman of the house mentioned the standing stone down the lane. I had seen it on the map, but didn't want to push my luck here, however, she gave me directions and off I set.

Like the nearby tomb this too is a "can't see it until the last minute" site. As you round the hedge from the farmyard the field drops into a basin and the stone stands in the middle.

It is a 1.4m tall mudstone pillar, with lovely embedded pebbles.

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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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