Alex Honnold Climbs a 4,000 Foot Sea Wall (Full Episode) | Arctic Ascent | National Geographic
2026 · 49 min · Big Wall, Alpine, Documentary · National Geographic
National Geographic follows Alex Honnold and a small team as they attempt Ingmikortilaq, a roughly 4,000‑foot sea wall on the Renland Ice Cap in eastern Greenland. The film documents an expedition to one of the largest unclimbed rock faces in the Arctic — approach, hauling, route‑finding and anchor building in remote polar conditions — and makes the logistics and objective hazards of a big‑wall alpine sea face the central story. The episode also records a scientific program alongside the climb: glaciologist Heidi Sevestre works with the team to collect field measurements and observations about the surrounding glaciers and ice cap. That interplay — a climbing expedition doubled as a platform for glaciological data collection — is the film’s main value, showing how technical climbing operations can be used to access and document rapidly changing polar environments.
Review
The final episode on its own, and if you only want the wall this is the one. National Geographic follows Alex Honnold and a small team to Ingmikortilaq, a roughly 4,000-foot sea cliff rising from Nordvestfjord in eastern Greenland with no climbing history before this expedition. Honnold and Hazel Findlay made the first ascent on August 16, 2022.
This is for anyone who wants to see an Arctic big wall climbed for the first time, with the approach across the Renland Ice Cap, the hauling, the route finding and the anchor building all in frame. Heidi Sevestre's glaciology work runs alongside, and the film argues that technical climbing can be a platform for science. Skip it if you have watched the Mega Episode. This is the same footage, and forty-nine minutes on its own loses the ice cap traverse that sets it up.
What works is the lower third of the wall. It is loose, scree-covered rock, the climbing reaches 5.11 with long runouts, and the film makes clear that the danger there was not about difficulty. What it gets wrong is Findlay. She shares the first ascent and the title and framing hand the wall to Honnold alone.
Arctic Ascent with Alex Honnold: Mega Episode is the full ninety-four-minute run, and the version I recommend. Watch this one if you already know the story and want to return to the climb.
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