Carrownaganonagh : Wedge Tomb

Grid RefC 159 256
GPSC 15918 25565 (3m)
Longitude7° 45' 2.72" W
Latitude55° 4' 37.71" N
ITM east480366
ITM north584435
Nearest TownMillford (3.6 Km)
OS Sheet2
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 17th August 2008

As I first approached this site it was evident that it was embedded in a field hedge, which didn't bode well. Such sites are usually very damaged or very difficult to see properly. However, when I finally found the right field I was very relieved to see that the monument is actually free-standing and not in the hedge.

From the gate it looked as if it was just a pile of earth and that there is nothing much to see. This couldn't be further from the truth. Within this narrow mound there is a narrow chamber that has a single roofstone. Access to the gallery is via a narrow opening at one end.

The 3m long, 1m wide gallery is mostly covered with just the opening and one small section of the wall exposed. In this exposed area there is a small gap between the top of the orthostat and the roofstone. There is a small chocking stone in this gap to help keep the roofstone level.

A large stone stood upright to form the wall of a passage or chamber, usually in a passage tomb, but can also refer to the walls of any tomb.

Like this monument

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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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