Wireless Hill is a steep-sided hill with a summit plateau that takes up most of the North Head promontory at the northern end of Australia’s subantarctic Macquarie Island, lying in the Southern Ocean about halfway between Australia and Antarctica. Its highest point is about 100 m above sea level and it is joined to the main body of the island by a low and narrow isthmus that is occasionally wave-washed in heavy storms. Macquarie Island Station, operated by the Australian Antarctic Division and the only permanently populated place on the island, lies at the northern end of the isthmus at the foot of Wireless Hill. The hill is so named because it was the site of an early wireless telegraphy relay station, part of the first radio link to Antarctica.