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Aldo Kane looks back on the climbing route, on Pool Wall in Eastern Greenland. (photo credit: National Geographic/Pablo Durana)
National Geographic/Matt Pycroft2 / 21
Alex Honnold checks his climbing harness and carabiners on Pool Wall in Eastern Greenland. (photo credit: National Geographic/Matt Pycroft)
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Adam Mike Kjeldsen looks at the route ahead during a break from ascending the Pool Wall. (photo credit: National Geographic/Matt Pycroft)
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Climbers Alex Honnold, right, and Hazel Findlay assess the route ahead as they ascend Pool Wall in Eastern Greenland. (photo credit: National Geographic/Pablo Durana)
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Alex Honnold displays a bloody nose after being hit by icefall while ascending Pool Wall in Eastern Greenland. (photo credit: National Geographic/Pablo Durana)
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Dr. Heidi Sevestre traverses a stretch of dry glacier in Eastern Greenland. (photo credit: National Geographic/Pablo Durana)
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Aldo Kane and Adam Mike Kjeldsen look out at the low afternoon sun in Eastern Greenland. (photo credit: National Geographic/Pablo Durana)
National Geographic/JJ Kelley8 / 21
Dr. Heidi Sevestre looks out, as she ascends Pool Wall in Eastern Greenland. (photo credit: National Geographic/JJ Kelley)
National Geographic/Matt Pycroft9 / 21
Mikey Schaefer, Adam Mike Kjeldsen and Dr. Heidi Sevestre take a moment while relaxing in a portaledge on Pool Wall in Eastern Greenland. (photo credit: National Geographic/Matt Pycroft)
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Ominous icicles on the pool wall. (photo credit: National Geographic/Simon Niblet)
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Alex Honnold bandaged and focused on the lead climb. (photo credit: National Geographic/Pablo Durana)
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Three tents pitched high on the pool wall. (photo credit: National Geographic/Simon Niblet)
National Geographic/Matt Pyecroft13 / 21
Aldo Kane peaks out from one of the tents on the pool wall. (photo credit: National Geographic/Matt Pyecroft)
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The team boat in the open water surrounded by icebergs. (photo credit: National Geographic/Pablo Durana)
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Alex Honnold looks out across the Renland Icecap from his tent. (photo credit: National Geographic/Pablo Durana)
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Alex Honnold traverses a stretch of dry glacier in Eastern Greenland. (photo credit: National Geographic/Pablo Durana)
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Alex Honnold wears tape on his nose having been hit by falling ice as he ascends Pool Wall in Eastern Greenland. (photo credit: National Geographic/Pablo Durana)
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Hazel Findlay climbs Pool Wall in Eastern Greenland. (photo credit: National Geographic/Pablo Durana)
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(Left to right): Adam Mike Kjeldsen, Dr. Heidi Sevestre and Alex Honnold take a break from skiing across the Renland Icecap in Eastern Greenland. (photo credit: National Geographic/Pablo Durana)
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Alex Honnold's expedition team, led by Aldo Kane, traverse the Renland Icecap in Eastern Greenland. (photo credit: National Geographic/Pablo Durana)
National Geographic/Matt Pycroft21 / 21
Dr. Heidi Sevestre takes snow samples on the Renland Icecap in Eastern Greenland. (photo credit: National Geographic/Matt Pycroft)