Mebbin National Park  Mebbin is a national park located in New South Wales, Australia, north of Sydney. It is part of the Shield Volcano Group of the World Heritage Site Gondwana Rainforests of Australia inscribed in 1983 and added to the Australian National Heritage List in 2007. It is also part of the Scenic Rim Important Bird Area, identified as such by BirdLife International because of its importance in the conservation of several species of threatened birds.