Heathtown : Artificial Mound

Grid RefO 103 630
Longitude6° 20' 0.49" W
Latitude53° 36' 18.76" N
ITM east480366
ITM north584435
Nearest TownGarristown (5.3 Km)
OS Sheet43
UTM zone29U
UTM x449041
UTM y5761192

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Heathtown - Henge
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Visit Notes

Sunday, 3rd February 2002

Having just come from Fourknocks down the road anything is going to be disappointing. This site gains everything from the proximity of the henge and just knowing Fourknocks is around the corner.

It is about 3m high and perhaps 10 in diameter.

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Like this monument

Marked Sites


From Naul take the R108 north and after about 1.6km turn left. Go past Fourknocks to the end of the lane and turn right. Take the right fork at the next junction and then right again at thenext crossroads. The mound is about 150m along on the right.

Random Gazetteer

A Selection of Other Artificial Mounds

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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