Alex Honnold, American rock climber known for his free solo ascents, leads his team across a massive glacier and attempts to free climb a 1,500-foot rock wall in a first-ever Greenlandic expedition. Arctic Ascent with Alex Honnold | S1, E1 Explore the World with National Geographic subscriptions: https://natgeo.com/ytngmagazine ➡ Subscribe: https://on.natgeo.com/4p5A0D6 ➡ Get more Nat Geo Full Episodes: https://on.natgeo.com/3V5ZfHI ➡ Get wild with Nat Geo Animals Full Episodes: https://on.