
Environment Minister John Gormley has insisted that the M3 motorway in Co Meath poses no threat to the Rath Lugh monument near the Hill of Tara.
Last week, a woman chained herself inside an underground tunnel in an effort to block the construction work, which protestors say will undermine the esker that Rath Lugh sits on top of.
They say the work contravenes a protection order on the national monument, but Mr Gormley insisted today that he could "absolutely guarantee" that Rath Lugh will not be damaged.