Drumena : Souterrain

Grid RefJ 311 341
Longitude5° 59' 20.14" W
Latitude54° 14' 19.99" N
ITM east480366
ITM north584435
Nearest TownCastlewellan (3.6 Km)
OS Sheet29
UTM zone29U
UTM x449041
UTM y5761192

This is a subsite of:

Drumena - Stone Fort
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Visit Notes

Sunday, 23rd February 2003

There are now two entrances to the soutterrain, the original one which is a shallow slope and one added for convinience with steps. The plan is unusual. At the base of the original entrance there is a small chamber to the left which could be for defensive purposes - to hack people entering to pieces! Opposite the entrance is a large drystone constructed chamber with a heavily lintelled roof. This has an air hole in the end wall. At the base of the entrance slope there is a 30m passage to the right (which now has the newer stepped entrance at the end of it). This appears to have been a blind passage! i.e. it did not lead to anything. The walls of this passage, like the rest of the structure are drystone built with heavy stone lintels.

If you go outside and look at the ground between the house foundations and the new entrance there is a rise in the ground, which I feel may cover another chamber which branched off the 'blind' passage, but has had its entrance blocked up.

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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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