Coleraine | Sheet 04
The Discoverer Series of maps by the Ordnance Survey of Northern Ireland are set to the Irish Grid system. Each map covers an area of 40km x 30km and the contours are spaced out at 10 metre vertical intervals. There is an overlap between adjacent sheets to provide extra detail surrounding borderline locations. On the back of each sheet is a townland map and index.
Nearly two-thirds of the western end to the Causeway Coast Way is on the Coleraine Map (Sheet 04). Starting from Dunseverick Castle, the map continues all the way to Portstewart and includes the Giant's Causeway, Portballintrae, Dunluce Castle, Portrush as well as the popular detour town of Bushmills.