'Brockagh (Glendalough m)' : Bullaun Stone

Grid RefT 124 971
GPST 12400 97067 (8m)
Longitude6° 19' 30.37" W
Latitude53° 0' 45.13" N
ITM east480366
ITM north584435
Nearest TownLaragh (2 Km)
OS Sheet56
UTM zone29U
UTM x449041
UTM y5761192

This is a subsite of:

The Seven Fonts (Glendalough a) - Brockagh - Bullaun Stone
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Visit Notes

Sunday, 1st April 2007

There are four separate stones in this group. The main one is a flat slab with two large bullauns - one 30cm in diameter, the other 35cm. Both are 15 cm deep. Just a couple of metres from this slab there are two smaller earthfast boulders each with a single bullaun about 30cm diameter. One of these is quite shallow and looks incomplete.

A little further up the hillside is the fourth stone, which has a very shallow, but wide basin that seems to be unfinished, too.

Out of all the Glendalough bullauns these have the finest view across the valley, being uninterupted to the round tower and up along the valley to Lugduff.

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A Selection of Other Bullaun Stones

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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