Newborough Warren is an extensive sand dune system and includes the most southerly part of Anglesey at Abermenai Point. The warren is made up of active and fixed dunes and provides an important habitat for many rare plants and animals. The area forms part of a National Nature Reserve (NNR) which encompasses Malltraeth Sands, the Cob Pool, Cefni Saltmarsh, Abermenai Point, Llanddwyn Island, Llanddwyn Bay and Penrhos Bay. Originally planted in 1947 to stop Newborough from being engulfed in sand, Newborough Forest is now an important amenity with its extensive network of forest tracks and paths.