Hill Of Slane : Motte

Grid RefN 963 752
Longitude6° 32' 28.09" W
Latitude53° 43' 3.21" N
ITM east480366
ITM north584435
Nearest TownSlane (1 Km)
OS Sheet43
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 21st October 2001

This site has so much going on it's hard to know where to begin. On the east side of the hill is a barrow that is sadly unreachable due to an electric fence. Next to that is a huge motte clearly visible even through its covering of trees. Then you have the church and monastic school.

What make The Hill Of Slane so famous though (and the reason for access) is that it is where St. Patrick first came when he arrived in Ireland. It is told that he lit up a huge fire on the top of the hill to get attention.

The ruins of the college and church are quite beautiful and worth a visit. The barrow and motte though remain just out of reach beyond the electric fence.

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Marked Sites


From Slane take the N2 north for about 500m and take the first left. Follow the road until you reach the car park. From here cross the field to the church and oratory. The motte lies beyond.

Random Gazetteer

A Selection of Other Mottes

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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