Unlike the other two tombs within the Mountdrum complex this one hadn't been cleared of its gorse bushes at the time of my visit. I could just make out a rise in the bushes and so was able to locate it.
Much of the cairn seems to have been robbed away, exposing a narrow gallery . This, however, is full of peat, heather and gorse, so it is rather tricky to work out what's going on. The gallery is definitely aligned east-west, but that just about all that can be said about it in this state.
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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. |