'Cong 3' : Stone Circle

TownlandGlebe
CountyMayo
Grid RefM 163 560
GPSM 16309 56002 (8m)
Longitude9° 15' 45.87" W
Latitude53° 32' 50.16" N
ITM east480366
ITM north584435
Nearest TownCong (1.7 Km)
OS Sheet38
UTM zone29U
UTM x449041
UTM y5761192

This is a subsite of:

Cong - Glebe - Stone Circle
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Visit Notes

Saturday, 25th January 2003

This is not really a stone circle. It would have come nore under the same catagory as Castleruddery Lower (County Wicklow) - an embanked circle. However, it would have been twice the size of Castleruddery. It is truly massive. Sadly only one side now remains, that to the north.

As you walk around the emaining section of the perimeter you can see the bank with stones set on either side. Some of these are quite lovely. All lumpy and bumpy examples of the local limestone.

This monument being incomplete is a sad loss. At around 60m in diameter it would have been truly impressive.

Click Thumbnail to View Full Size Image

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Saturday, 18th August 2007

It is the northwest quadrant that still stands. There are quite a lot of large stones still standing, some of which reach 1.5m tall. Amongst them is at least one very pitted orthostat, which is roughly at the west edge - perhaps a cardinal point marker?

Click Thumbnail to View Full Size Image

_____

Like this monument

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A Selection of Other Stone Circles

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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