Radeery : Wedge Tomb

Grid RefH 585 259
GPSH 58484 25912 (3m)
Longitude7° 6' 15.14" W
Latitude54° 10' 43.56" N
ITM east480366
ITM north584435
Nearest TownNewbliss (3.1 Km)
OS Sheets27, 28A
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Saturday, 8th May 2010

After the massive scale of the two previous monuments ( Killina (County Monaghan) and Tiredigan (County Monaghan)) this one was a bit of a surprise. This is a tiny wedge tomb that is tucked up against a field ditch. It is actually right next to the road, but you can't see it from there due to its small size, the height of the field bank and the large gorse bush that covers half of the mound.

The covering mound is just 5m long, 2m wide and a little over 1m tall. At one end a tall stone stands proud of the mound. At the other end, below a large gorse bush, there is the exposed edge of a roof slab. You can see inside, but the gallery is full of rubble.

The lady at the neighbouring house was kind enough to show me where this monument is after I struggled to see it from the road. Many thanks to her for taking time to do this.

Wedge tombs are most easily catagorised by their main characteristic - they are taller and wider at the entrance than they are at the rear. Like court tombs they have a gallery which is split either by septal slabs or sill stones into smaller chambers. Galleries can be anything up to 8m in length.

The side walls are, uniquely, made of two rows of stones (three in some cases), which is refered to as double or triple walling. This double walling is perhaps the best feature to identify a wedge tomb by.

The roofs are constructed by laying large blocks or slabs across the gallery, resting on the tops of the walls.

They are often quite small, an amazing exception being Labbacallee (County Cork), one of the largest in Ireland. It is very rare to find a wedge tomb with its roof still in situ, although, occasionally, one or two of the roof slabs are present (see Proleek (County Louth)).

In some examples the roof would have extended beyond the front closing slab forming a portico at the front, which in a few specimens was split by a vertical stone place centrally in the entrance.

Like court tombs, portal tombs and passage tombs they were covered by a cairn, which, at many sites, it is still often possible to determine. A few, such as Burren SW (County Cavan), still retain a large proportion of the cairn.

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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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