TL;DR
Polish skier Bartek Ziemski successfully completed the first unassisted ski descent from Lhotse’s summit to Base Camp. His climb and descent occurred without supplemental oxygen, highlighting his remarkable mountaineering skill. This feat is notable in ski mountaineering history.
Polish ski mountaineer Bartek Ziemski has completed the first known unassisted ski descent from the summit of Lhotse, the world’s fourth-highest mountain, to Base Camp, without using supplemental oxygen. This achievement underscores his exceptional skill and endurance in high-altitude environments.
Ziemski, 37, arrived in Nepal in early April and acclimatized by climbing Mera Peak before heading to Base Camp for Lhotse. He ascended Lhotse on May 12, reaching the summit at 8,516 meters (27,940 feet), and then skied down the mountain’s steep, icy face. His descent was the first from the summit to Base Camp to be completed without stopping or oxygen assistance.
He joined the rope-fixing team of expedition outfitter Imagine Nepal to navigate around a large serac in the Khumbu Icefall, which delayed the start of his climb. Despite challenging conditions, including snow-covered peaks and icy slopes, Ziemski managed a continuous descent, weaving past seracs, jumping crevasses, and crossing ice ladders, before skiing through the Khumbu Icefall back to Base Camp.
Why It Matters
This achievement is significant because it marks the first known descent of Lhotse from the summit to Base Camp without stopping or oxygen, a feat that highlights advancements in high-altitude ski mountaineering. It also emphasizes the growing capabilities of independent climbers operating outside of commercial expeditions, potentially influencing future high-altitude ski descents and mountaineering standards.

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Background
Previous ski descents of Lhotse include the 2018 ascent by Hilaree Nelson and Jim Morrison, who descended from the summit supported by a large team, and with oxygen assistance. Ziemski’s effort differs as he was unassisted, solo, and without supplemental oxygen, emphasizing a different approach to high-altitude ski mountaineering. His descent follows a long tradition of daring ski attempts on Everest and neighboring peaks, but his success is unique in its independence and technical challenge.
“The descent was exhausting, but I was determined to complete it without stopping or oxygen. It’s about pushing limits and doing it for the pure challenge.”
— Bartek Ziemski
“Navigating around the serac in the Icefall was critical. Ziemski’s ability to adapt and push through tough conditions was impressive.”
— Expedition organizer from Imagine Nepal

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What Remains Unclear
Details remain unclear about the precise technical conditions during Ziemski’s descent, such as the exact route taken and the level of difficulty faced at various points. It is also not confirmed if he plans further high-altitude ski descents or mountaineering projects.

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What’s Next
Further details about Ziemski’s future plans are expected to emerge, including whether he intends to attempt other high-altitude ski descents or mountaineering challenges. The mountaineering community will likely scrutinize his achievement for its impact on solo, oxygen-free high-altitude skiing.

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Key Questions
Who is Bartek Ziemski?
Bartek Ziemski is a Polish ski mountaineer and software engineer who specializes in high-altitude ski descents, operating independently without sponsorship or social media presence.
What is significant about his descent of Lhotse?
He is the first known person to ski from Lhotse’s summit to Base Camp without stopping or using supplemental oxygen, demonstrating exceptional skill and endurance.
How did Ziemski prepare for this climb?
He acclimatized by climbing Mera Peak, then joined a rope-fixing team to navigate around hazards in the Icefall before summiting Lhotse early in the season.
What challenges did he face during the descent?
He encountered snow-covered sections, icy slopes, crevasses, and the need to navigate around seracs, all while skiing steep, icy terrain unsupported.
Are there plans for future ascents or descents?
There has been no official announcement; further plans remain uncertain but are likely to be announced if Ziemski pursues additional high-altitude ski mountaineering projects.