11. Morfa Harlech sand dunes is an extensive dune system stretching northwards from the town of Harlech. 12. Ballyteigue Burrow, located near Duncormick, is one of the finest protected sand dune systems in Ireland. 13. The extensive dune system covers an area of 650 hectares and comprises a series of parabolic sand dunes. 14. Located in the coastal zone are flats, beaches and dune systems , granite sierras and the volcanic shield communities. 15. A dune system know as Sealink Travel Group and a camping ground operated by the Kangaroo Island Council. 16. For several years, the town has used bulldozers to pile up the sand, creating an artificial dune system . 17. Coastal dune systems are mainly controlled by a principle natural process called the sediment supply and transport system. 18. Located only minutes from the centre of Nelson Bay, it is the largest sand dune system in Australia. 19. Characteristically, " Ammophila arenaria " invades the historically flat Californian foredunes transforming the ecology of the dune system . 20. The oldest dune system has been dated at 700, 000 years, which is the world's oldest recorded sequence.
