Northern Ireland puts Belfast inside Newry Mourne and Down. Some 348,005 people call it home. Start close and work out: Portmore Lough some 14 miles, Lough Neagh some 20 miles to the west, Lough Cowey some 20 miles, Lough Island Reavy some 25 miles to the south with Clay Lake some 41 miles. On Lough Island Reavy