'Seahan II' : Cairn
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Visit Notes
Saturday, 27th May 2006
This is the largest of the monuments on Seahan and can be seen for miles around. Early reports about the hilltop say that it had a kerb , but this is no longer visible.
The cairn is 25m in diameter and 2m high. An Ordnance Survey trig point stands on top of it. The southern side has little vegetation on it so the cairn material is exposed.
The views from the top of Seahan are simply stunning. There isn't much you can't see from here.
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About Coordinates Displayed
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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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