'Greatheath III' : Barrow

Grid RefN 521 011
GPSN 52119 01147 (3m)
Longitude7° 13' 21.22" W
Latitude53° 3' 30.45" N
ITM east480366
ITM north584435
Nearest TownPortlaoise (6 Km)
OS Sheet55
UTM zone29U
UTM x449041
UTM y5761192

This is a subsite of:

The Great Heath - Greatheath - Barrow Cemetery
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Visit Notes

Sunday, 11th April 2010

I wasn't expecting to find this barrow, because the aerial photographs of the area showed this part of the Heath to be covered in thick gorse plants. It was a pleasant surprise to find the area totally stripped ... apart from the barrow that is. Typical.

The design of this one is quite interesting and different from the others in the area. Instead of having a raised central platform with a surrounding bank it is simply defined by a ditch. The only way you would see this if it wasn't for the gorse bushes around it would be to fall in the ditch! There is a small raised bit around the east side that could be the remains of a bank, but the gorse and long grass don't really allow it to be assessed.

The central area is quite small, just a few metres across. The ditch is about 60cm deep and 1m wide.

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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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