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Readers note: This is an excerpt from the Trailblazers: Australia’s 50 Greatest Explorers exhibition, developed in 2015. This content was written as a brief biography on why this person was included in the exhibition.

Greg Mortimer was the first Australian to reach the summits of Mount Everest, K2, Annapurna II and Chongtar in the Himalaya – all without supplementary oxygen – and mounts Vinson and Minto in Antarctica. He went on to establish many new climbing routes in Antarctica and pioneer ship-based adventure travel to Antarctica and the Arctic.

Born on 10 December 1952, Greg spent his first five years living beside the family florist shop in Bondi Junction (NSW), before moving to Gladesville. At six, he contracted bronchiectasis, a lung infection causing a buildup of fluid needing to be regularly drained.


The first Australian to reach the summits of Mount Everest and K2 in the Himalaya, and mounts Vinson and Minto in Antarctica.

Image: Greg Mortimer
© Greg Mortimer

At 13, Mortimer saw climbers on the Three Sisters in the Blue Mountains and vowed to take up the sport. Despite falling and breaking his pelvis at 15, his love of rock-climbing and later mountain-climbing was undiminished. He studied geochemistry and geology at Macquarie University, spending his free time climbing in New Zealand, the UK, the European Alps and South America.

In the early 1980s he worked as a geologist, survival training instructor, and Scientific Affairs Adviser for the New Zealand Antarctic Division. In 1983 he was invited on the first Australian ascent of Annapurna II’s South Face, and was one of the team to reach the summit. The following year he climbed Everest by a new route on the North Face (the Great/Norton Couloir), leading the crux pitch now called ‘Greg’s Gully’.

In 1988, Mortimer sailed to Antarctica on a small boat to climb Mount Minto, the highest unclimbed peak in the Admiralty Mountains, and returned by plane later in the year to climb Mount Vinson, the continent’s highest peak. In 1990 he reached the summit of K2 and four years later, Chongtar, then the highest unclimbed peak in the world.

In the early 1990s he set up a company to take adventurous tourists to Antarctica by ship. Aurora Expeditions pioneered ship-based adventures including mountain climbing, sea kayaking and scuba diving in both Antarctica and the Arctic. He has led more than 80 such trips to Antarctica.

Greg Mortimer received the Medal of the Order of Australia for services to mountaineering, as well as three Australian Geographic Society medals.

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