Tullaberga Island is a small, uninhabited island off the coast of Victoria, Australia, near the town of Mallacoota. It is located west of Gabo Island and 7 kilometres (4.3 mi) east of the entrance to Mallacoota Inlet.On 15 May 1853, the SS Monumental City, on a run from Sydney to Melbourne, ran aground off Tullaberga Island and became a total wreck.