'Knocklea' : Passage Tomb

TownlandRush
CountyDublin
Grid RefO 270 554
Longitude6° 5' 3.77" W
Latitude53° 31' 59.44" N
ITM east480366
ITM north584435
Nearest TownRush (1.3 Km)
OS Sheet43
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 21st October 2001

I was only able to find one stone that may have come from the tomb, the rest either having fallen into the sea or been removed. The tomb would have offered splendid views of Howth, which once must have been a very sacred place.

The nearby promontory fort (O 274 563) stands proud on its huge outcrop into the sea, the perfect location. There is a Martello tower built on the spot now. I was unable to reach the fort itself and so know little of any embankments that may be present.

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Marked Sites

Directions

Head north from Rush on the R128 for about 1km after the very sharp bend in the road in Rush. I parked in a new estate on the left just opposite a farm track leading towards the sea. Follow this track until you reach the cliffs and the sea. Walk towards Howth. That's where this tomb used to be!

Miscellanea

"... at Knocklea on the seacoast north of the village of Rush, Newenham saw in 1838 the destruction of a kerbed mound, 30m across, under which was a simple passage grave with a funnel-shaped entrance and rectangular chamber, 2.4m by 2m, set asymmetrically to the passage like those at Kercado, I'lle Longue and Petit Mont in the Morbihan."

Irish Passage Graves - Michael Herity - Irish University Press 1974

Random Gazetteer

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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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