Eagle Mountain is a Hewitt of 638 m in Newry, Mourne and Down. All four of its nearest neighbours are higher, up to Slieve Binnian at 745.9 m.
All four of its nearest neighbours lie to the east, so it stands at the western edge of its group. It shares its height of 638 m with Grey Crag. It is the lowest of the eight register hills in the Mourne Mountains region, where Slieve Donard is highest. On the Hewitts height ladder it sits between Grey Crag (638 m) and Causey Pike (637 m).