Craigarogan : Passage Tomb

Grid RefJ 271 841
GPSJ 27054 84181 (5m)
Longitude6° 1' 46.05" W
Latitude54° 41' 22.53" N
ITM east480366
ITM north584435
Nearest TownAntrim (11.7 Km)
OS Sheet15
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 19th November 2006

This is an odd monument. It seems to be very out of place, because it has more in common with the undifferentiated passage tombs of Waterford, such as Matthewstown (County Waterford), than anything local.

There is a 9m long passage that is aligned northeast-southwest. This is sadly filled with dirt and debris, but it does have all its roofstones in place. At the southwest end the largest roofstone covers a large chamber that is segregated form the passage by a massive stone. This raises the following questions:

Is this a two stage monument?

If so, which came first - the chamber or the passage?

I wish someone would take the time to clear this site of the brambles that are slowly covering it up, because this really is a gem and needs to be visible from every angle.

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Like this monument

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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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