An image of the Slí Bhríde from Google
Earth showing the sites along the alignment.
The cosmic symbolism of that moment was incredible. The ancient and sacred cross of old Ireland, present in Newgrange and other prehistoric sites, was being replaced with a new cross, the cross of the new religion, brought from distant lands.
But the alignment must have been prehistoric and pre-dated Patrick possibly by three millennia or more. The Hill of Tara is at least Bronze Age in date with one remaining monument, the Mound of the Hostages, probably dating from the Neolithic. The motte on the Hill of Slane is probably at least Bronze Age in origin, if in fact it was not merely refashioned by the Normans from the remains of a Stone Age passage-tomb. The barrows on Oriel are also likely to date from the Bronze Age.
In 2008, I discovered something even more interesting. When you continue the line (in fact it is an arc, which follows the curvature of the earth) north and south, it leads to two places directly associated with Brigid - Faughart, her birthplace, and The Curragh in Kildare, where she grazed her cattle and beside which she established her monastery. This discovery was detailed in the second edition of 'Island of the Setting Sun - In Search of Ireland's Ancient Astronomers', published in 2008.
The alignment precisely intersects a number of monuments,
including this motte at Thurstianstown, near Beauparc.
Now, Dolores Whelan and Karen Ward have been following that alignment, and have discovered that there once was a Slí Bhríde, a pilgrim route of Brigid, which probably ran from Faughart towards Kildare. They are launching a modern 'Slí Bhríde', celebrating Brigid in all her forms, since she was also a prehistoric goddess. This is very much a Celtic pilgrim route.
The Slí Bhríde will be launched on Saturday, February 2nd, at 1.30pm in the Louth County Museum, Jocelyn Street, Dundalk, Co. Louth, by Dolores Whelan, Karen Ward, Anthony Murphy and Sally Cox.
See more about the festival celebrating Brigid of Faughart at Imbolc on Dolores Whelan's website.