Mourne Mountains (redirected from Mourne AONB)

Mourne Mountains (môrn), in Down, Newry, and Mourne dists., SE Northern Ireland. Slieve Donard (2,796 ft/852 m) is the highest peak in Northern Ireland. The district is barren and sparsely populated; there are ruins of sacked castles. Granite and sand and gravel are quarried. Belfast receives its main water supply from the mountains.