Ballygahan Upper : Barrow

CountyWicklow
Grid RefT 181 808
Longitude6° 14' 46.06" W
Latitude52° 51' 54.69" N
ITM east480366
ITM north584435
Nearest TownAvoca (2.3 Km)
OS Sheet62
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 28th October 2001

There is not much left of this barrow now, in fact I am amazed that they could identify it as a barrow. All that remains is a 50 cm high henge presumably where its kerb stones lie. Fastened to one side of the henge is a trig point.

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Marked Sites

Directions

From Avoca take the R752 south and take the second right. The barrow is on the very top of the low hill after about 2 km.

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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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