This cairn is in a great location. The Dublin plains to the north and the Wicklows to the south. The stunning views are ruined somewhat by the presence of a metal lorry container and some of the strangest aerials I have ever seen.
The cairn is 3m high and perhaps 12m in diameter. The top seems to have been robbed out slightly and some stones lie exposed on its upper surface.
My journey to Lugmore (County Dublin) took me on a roundabout route which passed this cairn . The masts are still rather offputting.
I was quite happy to come back here as many of the trees to the south of the site have been cleared and the amazing view to Seefin Hill (County Wicklow), Seahan Hill (County Dublin) and beyond is now opened up.
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.
Follow the R114 out of Dublin and take the third right after Oldbawn. Be careful this is a nasty turn that doubles back on itself on a blind bend. Follow the road and then the track until you reach a small settlement. Park here and walk along the track through the plantation. You will reach a sharp left bend in the track where you will see a muddy path heading through the trees. The cairn is about 250m along this track where the trees open out again.
Knockannavea means 'Hill of the Raven'
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.