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4,000 feet of impossible.
Alex Honnold leads an expedition to Greenland to climb a huge 4,000 foot sea cliff and investigate the impacts climate change on the region.
A first-ever Greenlandic expedition begins as Alex Honnold leads his team across a massive glacier and attempts to free climb a 1,500-foot rock wall.
The climbing team is hit by deadly ice fall before attempting a first-ever traverse of the Renland Ice Cap enroute to their final climbing objective.
Alex and the team reach the final phase of their epic expedition. A 4000 foot unclimbed sea wall, and one of the most important glaciers in Greenland.
