Covering from Portballintrae to Torr Head including Rathlin Island and from Ballymoney to Gleariff this OSNI 1:50 000 scale map of Ballycastle 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.
