Two people were injured when a helicopter crash-landed today near the prehistoric burial site at Newgrange in Co Meath.
Four people were in the machine when it got into difficulties and came down in a field behind the 260ft-wide national monument.
Police said two of those on board had escaped unhurt.
The injured were taken to hospital in nearby Drogheda, Co Louth.
The burial mound, 30 miles north of Dublin, which dates back to 3200BC and pre-dates Egypt’s pyramids by six centuries, was not damaged in the incident.
The area has been sealed off. Air accident investigators have been called to the scene.