Tamnaharry : Standing Stone

Grid RefJ 154 243
Longitude6° 14' 0.2" W
Latitude54° 9' 16.76" N
ITM east480366
ITM north584435
Nearest TownMayobridge (3 Km)
OS Sheet29
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 23rd February 2003

I love it when I finally get to a monumant that I've wanted to visit for a seemingly very long time!

What an amazingly featured stone this is - and in a wonderful setting too. It is 3m tall and 1.4m thick at its widest point. The north face is curved with a shoulder three quarters of the way up. The north face is much flatter, but like Mayo 1 (County Down) I would say that this is more likely to be natural.

It is located in a dip, on a ridge, between to higher rounded rocky peaks , a formation that is very saddle like (does that make sense?) The views to the south are fantastic, looking down on water and across to a dark wall of mountains beyond.

It is quite an up hill walk to reach it, but this trek is along a wonderful sunken track that climbs straight up the hill. A word of warning though - this track looks as if it turns into a stream during or just after heavy rain ... take wellies or wait for a dry day when you go.

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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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