Corbis/Michael St Maur Sheil Rural Antrim The green, rolling farmland of County Antrim stretches toward slemish Mountain in northeastern Northern Ireland. According to tradition, Saint Patrick spent his youth as a herdsman in this area after being carried off from Great Britain by Irish marauders (R44) Photo Researchers, Inc /Linda Barlett Mountains of northern ireland The mourne mounta ins form a natural barrier between the coast of northern ireland and it interior lowlands. The range runs 24 km(15 mi) along the country 's southwest coast and rises to a maximum elevation of 852 m(2, 796 ft)at Slieve Donard, just outside of Newcastle.4 Rural Antrim The green, rolling farmland of County Antrim stretches toward Slemish Mountain in northeastern Northern Ireland. According to tradition, Saint Patrick spent his youth as a herdsman in this area after being carried off from Great Britain by Irish marauders （掠夺者）. Mountains of Northern Ireland The Mourne Mountains form a natural barrier between the coast of Northern Ireland and its interior lowlands. The range runs 24 km (15 mi) along the country's southwest coast and rises to a maximum elevation of 852 m (2,796 ft) at Slieve Donard, just outside of Newcastle