Heard and Mcdonald Islands

The Place You Cannot Go

Heard Island sits in the southern Indian Ocean, roughly 4,000 kilometres southwest of the Australian mainland and 1,700 kilometres north of Antarctica. Tourists have landed there exactly three times in recorded history: in 1992, 1997, and 2002, all from a Russian icebreaker that positioned itself near Spit Bay long enough for brief shore excursions. There have been no tourist landings since. The McDonald Islands, about 44 kilometres to the northwest, have never had a tourist land on them at all. Commercial visits to the McDonalds are permitted only for “compelling scientific reasons.”

This is an honest account of a place you almost certainly will not visit, and why it is still worth knowing about.

What the Islands Are

The Territory of Heard Island and McDonald Islands is an Australian external territory. The islands were transferred to Australia from Britain in 1947. UNESCO inscribed them as a World Heritage Site in 1997, recognising their status as one of the rarest things in the world: a sub-Antarctic island ecosystem that has never had an alien species successfully introduced by humans. No rats, no cats, no rabbits, no mice. No introduced plants. The ecological baseline here is as close to pristine as any terrestrial ecosystem on earth.

Heard Island covers about 368 square kilometres and consists largely of a stratovolcano called Big Ben. The summit, Mawson Peak, rises to 2,745 metres and carries permanent glaciers. Big Ben is active, qualifying it as Australia’s only known active volcano outside its Antarctic territories. The McDonald Islands group is tiny by comparison, covering around four square kilometres across multiple islets, but shares the ecological intact status that defines the territory.

The McDonald Islands were themselves almost certainly dormant for 75,000 years before showing renewed volcanic activity after the UNESCO inscription in 1997. The islands have physically grown since then as a result of lava flows. Satellite imagery is how scientists track this, because nobody goes there to look.

Why Nobody Goes

Access requires a ship capable of operating in subantarctic sea conditions, which means heavy-weather vessels with ice ratings. The nearest departure point is Fremantle in Western Australia. A voyage takes roughly two weeks each way under good conditions. The Southern Ocean between Australia and the islands is among the stormiest water on the planet, and a significant portion of expedition days are lost to weather conditions that make landing impossible. There is no harbour. Access to shore from an anchored vessel requires small inflatable boats in conditions that are frequently rough.

The Australian Antarctic Division controls access through a permitting system administered under the Heard Island and McDonald Islands Act. Any activity on the territory requires a permit. Permits for purely tourist purposes have effectively not been issued in more than two decades. The Division’s current position prioritises scientific and environmental management visits over commercial or private tourism.

In October 2025 and January 2026, the RSV Nuyina conducted the first environmental management voyages to Heard Island in over twenty years. The scientific team conducted wildlife and vegetation surveys, removed more than a tonne of accumulated waste and asbestos-containing material from old structures, and installed remote monitoring equipment. The fact that these were newsworthy events underlines how rarely anyone gets there.

Why This Matters

The value of the islands lies precisely in their inaccessibility. The vast majority of sub-Antarctic islands around the world have been compromised, to varying degrees, by introduced species that arrived with human visitors: rodents from ships, cats released by sealers, rabbits from 19th-century provisioning expeditions. These introduced species have caused documented catastrophic declines in seabird populations across islands from Macquarie to South Georgia.

Heard Island has never had this problem. Its wildlife numbers are genuinely staggering as a result. The beaches at Spit Bay during the austral summer support breeding populations of southern elephant seals, leopard seals, and Antarctic fur seals. Five penguin species have been recorded on the island including large colonies of king penguins and macaroni penguins. Wandering albatrosses, which have wingspans of up to 3.5 metres and are among the most at-risk seabird groups globally, breed on Heard Island in what are considered healthy, stable numbers compared to most sub-Antarctic populations.

The island sits within a marine park covering roughly 630,000 square kilometres, one of the largest marine protected areas in the world. This protection extends to the exceptionally productive waters around the islands, which support large populations of Patagonian toothfish as well as the seabird and seal populations that depend on them.

The Sealers

Commercial sealers discovered and began working these islands in the 1850s, quickly reducing the Antarctic fur seal population to near-local extinction within decades. The animals recovered after sealing ended in the late 19th century and have now returned to healthy numbers, demonstrating what happens when a protected ecosystem is left to recover without the complication of introduced species.

The last human occupation of Heard Island was an ANARE (Australian National Antarctic Research Expeditions) station at Atlas Cove, operational from 1947 to 1955. The ruins of the station remain on the island. The asbestos material removed during the 2026 voyages came largely from these structures.

Climate

The islands have a subantarctic oceanic climate. Air temperatures at sea level range from around minus one degree Celsius in winter to six degrees in summer. Winds are frequent and severe. Snow can fall at any time of year and the upper elevations of Big Ben are permanently glaciated. Sea temperatures around the islands range from approximately one to five degrees Celsius.

In Practice

If access to the Territory of Heard Island and McDonald Islands genuinely interests you, the realistic pathway is participation in a scientific expedition. The Australian Antarctic Division occasionally accepts volunteer or associate participants in research voyages. Heritage Expeditions, a New Zealand-based operator specialising in sub-Antarctic and Antarctic expeditions, has operated in this region in the past, though specific voyages to Heard Island are rare and not offered in every season.

There is no other pathway. There are no commercial flights, no ferry services, no scheduled vessel access, and no infrastructure on the island. The territory has no residents, no services, and no capacity to support tourist visits beyond what an expedition vessel provides.

The appropriate response to Heard and McDonald Islands is not frustration at the restrictions but something closer to relief: one of the last functionally intact marine and terrestrial ecosystems in the southern hemisphere exists, in large part, because so few people have been there.