The motorway will run through a complex of archaeological sites associated with the Hill of Tara, which were placed on the World Monuments Fund's list of 100 Most Endangered Sites in June 2007.
The New York event included piper Jerry Dixon; Strings of Tara, a group of seven women harpists who played "Brian Boru's March" (Boru was the last of Ireland's High Kings), and host Susan McKeown, who sang "Mise ire" (I am Ireland), a Pdraic Pearse poem set to music. "Mise ire" includes the words: "Great my glory; I who bore C Chulainn the valiant; Great my shame, my own children that sold their mother."
Meanwhile, in Ireland, a simultaneous event was held, and a huge crowd gathered to form a human harp on Tara. Muireann Ni Bhrolchin who heads the Save Tara Campaign in Ireland, said she was heartened by the turnout. "The support for the campaign is growing - this was clearly demonstrated at the recent equinox event when 1,500 people gathered to form a huge human harp on Tara for the international artist John Quigley."