The maps produced by Ordnance Survey Ireland are called the Discovery Series. Discoverer Sheet No. 4 covers Coleraine and includes Ballymoney, Limavady, Portrush and Giant's Causeway.

The maps produced by Ordnance Survey Ireland are called the Discovery Series. Discoverer Sheet No. 4 covers Coleraine and includes Ballymoney, Limavady, Portrush and Giant's Causeway.

The maps produced by Ordnance Survey Ireland are called the Discovery Series. Discoverer Sheet No. 4 covers Coleraine and includes Ballymoney, Limavady, Portrush and Giant's Causeway.