'Dun Aengus' : Stone Fort

TownlandInishmore
CountyGalway
Grid RefL 818 097
GPSL 81780 09744 (3m)
Longitude9° 45' 58.44" W
Latitude53° 7' 30.55" N
ITM east480366
ITM north584435
Nearest TownKilcronan (6.5 Km)
OS Sheets51A, 51
UTM zone29U
UTM x449041
UTM y5761192
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Visit Notes

Sunday, 6th June 2010

This is probably the most famous cashel or stone fort in Ireland, if not the world. Its precarious position on the very edge of a 300 ft high cliff make for spectacular aerial photographs and a stomach-churning visit should you decide to look over the edge.

Below the cashel there is a visitor centre where you pay your 3 euro entrance fee. There is also a little shop and a cafe. Nearby there is a bar and some other shops. From the visitor centre there is a 10-15 minute walk up a rough path to the outer wall of the site. When you approach this you should look out for the cheveux-de-frise, a device for stopping cavalry attacks created by standing lots and lots of jagged stones upright to create an very serious obstacle. To be honest, this is really for show, because the steep hill and the rough terrain around the fort would slow down any cavalry attack!

Once inside the outer wall you can see the cashel properly. Its walls are massive and are reinforced with huge buttresses. They stand over 4m tall from the outside.

Inside the central cashel there is very little to tell of. A couple of rooms are built into the walls and the entrance is particularly well built. There are no structures inside, but there is an odd, raised rectangular platform of bedrock. There are also lots of tourists daring themselves to go and peek over the edge.

There are some guardians present to stop people doing stupid things near the edge and to keep people off the walls.

Does this monument deserve its hype? I think it does. The location is spectacular and the cashel certainly achieves its main purpose - to impress those that see it.

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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