If you explore the Mournes you should have a map. This one is perfect.
 
1: 25 000 Scale - The Mournes- A map for everyone, from the experienced hill walker or rock climber to the casual rambler, from the bird watcher or fisherman to the family out for a picnic. The Mournes in detail - tracks, cliffs, climbs, the Wall, etc. Contouring at 10 -metre intervals showing clearly the impressive relief of the uplands...sweeping down to the sea via the scenic drives and forests to boating and fishing.
 
Printed on water resistant paper

Contours at 10 metre intervals

Relief shading

Historical and tourist information on the area

Detailed geological map