I wasn't sure how to classify these stones, because they both bear ogham inscriptions. They are undoubtedly a stone pair, though, and they align on an odd bump on the Monavullagh Mountains to the west.
The westmost stone is tall (2m) and slim with a rectangular plan. The other is more standing-stone-like and is spearhead-shaped and leans slightly. The ogham inscriptions on both are on the west edge and are very worn.
30m to the east of the stones is an unusual enclosure that is built on a steep slope. Inside this there is a rectangular drystone platform and the floor area is scattered with stones.
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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.