Brennanstown : Standing Stone

Grid RefO 227 250
Longitude6° 9' 39.66" W
Latitude53° 15' 40.2" N
ITM east480366
ITM north584435
Nearest TownBray (7.1 Km)
OS Sheet50
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 31st October 2004

The grid reference for this site is a 'guestimate', because I was only able to see the stone from a distance.

This pointed standing stone is not in its original place, but was moved when one of the nearby bungalows was built. At the time it wasn't thought to be significant, but its proximity to Glendruid (County Dublin) was enough to prompt a proper archaeological examination.

This revealed that the stone marked an urn burial.

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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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