Covering from Bolea and Magherahoney to Glenshane Forest and Ahoghill. This OSNI 1:50 000 scale map of Ballymoney is one of a series numbered on an all-Ireland basis and Ordnance Survey of Northern Ireland is responsible for the design and publication of the sheets that cover Northern Ireland and adjoining parts of the Republic of Ireland. The layout incorporates a number of overlaps. It is the country''s most detailed small-scale map.