🇭🇲 Heard Island and McDonald Islands

Heard Island and McDonald Islands (ISO code: HM) are uninhabited subantarctic islands in the southern Indian Ocean, about 4,100 km southwest of Perth. They are an external territory of Australia, administered directly by the Australian Antarctic Division within the Department of Climate Change, Energy, the Environment and Water. Heard Island holds Australia's only active volcanoes, including Mawson Peak on the Big Ben massif (2,745 m), the highest point in Australian territory outside the Antarctic. The islands and surrounding waters form a strictly protected Commonwealth marine reserve under the Environment Protection and Biodiversity Conservation Act 1999 and are a UNESCO World Heritage site (inscribed 1997). There is no permanent population, no port and no airport, and no commercial trade takes place on the islands. Economic relevance is limited to scientific research and to the commercial fishery for Patagonian toothfish and mackerel icefish in the Australian exclusive economic zone, managed by AFMA under CCAMLR. The currency is the Australian dollar (AUD); access requires an EPBC permit.