What is Fraser island made up of?

Fraser Island, located off the coast of Queensland, Australia, is primarily made up of sand dunes, which are formed from silica sand. The island features diverse ecosystems, including rainforests, freshwater lakes, and coastal heathlands. It is also home to unique flora and fauna, including the famous dingoes and various bird species. Fraser Island is recognized as a UNESCO World Heritage Site due to its ecological significance and natural beauty.