Crannagh : Portal Tomb

Grid RefM 425 059
Longitude8° 51' 30.76" W
Latitude53° 6' 2.21" N
ITM east480366
ITM north584435
Nearest TownBallyvaghan (19.6 Km)
OS Sheet52
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 30th June 2002

Remoteness and the fact that it's not actually in 'The Burren' proper make this a little visited tomb. These facts also make it quite wonderful. It is a genuine Burren style portal tomb, sitting on the craggy limestone plateau and is over 3m tall.

The 4m x 3m capstone rests on three slabs that form the chamber, which is open to the front. Drystone walling can still be seen in between the slabs.

It is not totally unvisited however, as testified to by several initials carved within.

Stretching back in an easterly direction are the remains of the cairn. This is some 25m in length and tapers to a fine point. A good view ot the front is obscured by some trees that have been left to grow in front of it.

I was going to head over to Poulnabrone after here but I was very content with seeing just this fine example today.

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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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