TheOS Northern Ireland  Discoverer series is the most detailed small–scale map series that gives full coverage of Northern Ireland.
It will be of particular interest to anyone walking, cycling or motoring and keen to enjoy the beauty of the countryside.
Each map covers an area of 40 km by 30 km.
These large–format maps are ideal for planning and referencing,
and walkers, cyclists and horse riders will find the public rights–of–way information invaluable.