Ballynahown : Wedge Tomb

CountyClare
Grid RefM 108 030
GPSM 10779 02967 (7m)
Longitude9° 19' 52.5" W
Latitude53° 4' 11.66" N
ITM east480366
ITM north584435
Nearest TownLisdoonvarna (5.3 Km)
OS Sheet51
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Monday, 7th June 2004

This tomb stands in more open land in the same field as the nearby tomb ( Ballynahown (County Clare)). The remaining sidestone is 3.5m long and 1.2m tall. A large slab leans against this which could have been the roof.

Both this and the other tomb align north-south (presumably the direction that the major erosion line run in). There are traces of cairn material scattered around the base of the slab and the distribution of this implies that the remaining slab was the east wall.

A cairn is a large pile of stones, quite often (but not always) containing a burial. Sometimes they have a kerb around the base.

Most cairns are hemi-spherical (like half a football), but the piles of stones used to cover wedge tombs, court tombs and portal tombs are also called cairns. When associated with these types of monument they are not always round, but sometimes rectangular or trapezoidal.

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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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