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The first couple and team to summit all 14 eight-thousanders were the Italians Nives Meroi (who was the second woman to accomplish this feat without supplementary oxygen), and her husband Romano Benet on 11 May 2017. [15] [16] The couple climbed alpine style, without the use of supplementary oxygen or other support. [16] [17]
Two years later, on 20 August 1980, Messner again stood atop the highest mountain in the world, without supplementary oxygen. For this solo climb, he chose the northeast ridge to the summit, where he crossed above the North Col in the North Face to the Norton Couloir and became the first man to climb through this steep gorge to the summit ...
In May 2019, Sirbaz became the first Pakistani to successfully summit the 8,516-metre (27,940-foot) high Mount Lhotse – the world’s 4th highest mountain - without using supplementary oxygen. [8] In July 2019, Sirbaz climbed the summit of the 8,047-metre (26,401 ft) Broad Peak mountain in Pakistan, without using supplementary oxygen. [9]
The first person to climb the Seven Summits without using supplemental oxygen on Mount Everest is Reinhold Messner. [40] Miroslav Caban is the second climber to finish the project without supplemental oxygen on Everest (finished in 2005 with Carstensz). Ed Viesturs also summitted all peaks without supplemental oxygen. [41]
On 4 June, Edward Norton, without supplemental oxygen, reached a point on the mountain's Great Couloir 8,572.8 m (28,126 ft) high, his companion Howard Somervell having turned around a short distance before. [24] This was an altitude record which would not be broken, with certainty, until the 1950s, or without supplemental oxygen until 1978.
Bottled oxygen can help mountaineers survive in the death zone. Mountaineers use supplemental oxygen in the death zone to reduce deleterious effects. An open-circuit oxygen apparatus was first tested on the 1922 and 1924 British Mount Everest expeditions; the bottled oxygen taken in 1921 was not used (see George Finch and Noel Odell).
Fastest ascent of the 5 highest eight-thousanders in 70 days (the record for climbing without supplementary oxygen is 4 years and 219 days by Spanish brothers Alberto Iñurrategi and Felix Iñurrategi). [9] Fastest triple-header of Everest, Lhotse and Makalu in 2 days and 30 minutes (Purja was the previous record holder from 2017). [9]
On July 18, 2023, Hugo Ayaviri climbed Gasherbrum II without oxygen, the fourth 8000’er in his quest to be the first Bolivian to summit all fourteen 8000m peaks. [35] On July 19, 2023, Andrzej Bargiel made the highest descent from Gasherbrum II on skis. He summitted the mountain without the use of supplementary oxygen and began his ski ...