Cloghcor : Portal Tomb

Grid RefG 599 438
Longitude8° 36' 59.85" W
Latitude54° 20' 28.47" N
ITM east480366
ITM north584435
Nearest TownStrandhill (8.2 Km)
OS Sheet16
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 17th August 2003

As I walked up to this tomb it started to rain ... heavily! So, when I came to a very viscious barbed-wire fence I really didn't feel like climbing over it. But from 10m away you can see an enormous amount of this tomb, because is is constructed from enormous stones.

The portal stones are about 2m tall and very heavy duty. The capstone has made the chamber totally collapse under its weight and now lies behind the portal stones.

Due to the rain and not particularly enjoying getting wet it took me a while to realise why this monument felt 'wrong'. It is aligned north to south with the portal at the north and it is on the very highest point of a ridge.

It does offer very fine views out over Sligo Bay. On a good day you could probably see Knocknarea from here to the south. The tomb would only have to point slightly west of north to face directly away from Knocknarea. The heavy rain stopped me getting my compass out to check the exact alignment.

Portal stones are a pair of upright stones that form the 'entrance' to a portal tomb. They are usually well matched, being of even dimensions. As well as forming this doorway they also act as the front support for the capstone and are usually taller than the stones that form the chamber.

Often there is a door stone in between them blocking off access to the chamber within.

The large rock used to form the roof of a portal tomb or kist.

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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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