Boundary Islet
Encyclopedia
Hogan Island
Hogan Island is a granite island, with an area of and a high point of , in south-eastern Australia. It is the largest of Tasmania’s Hogan Group, lying in northern Bass Strait between the Furneaux Group and Wilsons Promontory in Victoria...
of islands and islets at latitude 39°12' S, south of the Wilsons Promontory
Wilsons Promontory
Wilsons Promontory is a peninsula that forms the southernmost part of the Australian mainland and is located at . South Point at is the southernmost tip of Wilsons Promontory and hence of mainland Australia...
, the southernmost part of both mainland Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
and mainland Victoria
Victoria (Australia)
Victoria is the second most populous state in Australia. Geographically the smallest mainland state, Victoria is bordered by New South Wales, South Australia, and Tasmania on Boundary Islet to the north, west and south respectively....
. The boundary between Victoria and Tasmania
Tasmania
Tasmania is an Australian island and state. It is south of the continent, separated by Bass Strait. The state includes the island of Tasmania—the 26th largest island in the world—and the surrounding islands. The state has a population of 507,626 , of whom almost half reside in the greater Hobart...
is a parallel similarly at latitude 39°12'; on it is thus Tasmania's only land boundary, and at 85 metres long it is the shortest land border between any Australian states. The position of the island was surveyed in 1801 by Captain James Black, who erred in placing the islet further north than it is. It was later found that the border at 39°12' S actually passed through the islet.
Boundary Islet was once known as North East Islet.