Alex Honnold Climbs a 4,000 Foot Sea Wall (Full Episode) | Arctic Ascent | National Geographic

Alex Honnold, a rock climber famous for his free solo ascents, and a team of expert climbers and scientists reach the final phase of their epic expedition - A 4,000 foot sea wall called Ingmikortilaq, one of the biggest unclimbed rock faces on the planet, and one of the most important glaciers in Greenland.

Courtesy of National Geographic on YouTube. Watch on YouTube ↗

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