Hazel Findlay

Alex Honnold leads a six-week expedition to Eastern Greenland to make a first ascent of one of the highest unclimbed rock faces in the world. But this is much more than a climbing trip. With the help of glaciologist Heidi Sevestre, Alex and the team investigate the impact of climate change on the glaciers, ice caps and fjords in this remote part of the Arctic.

Follows professional free-climbers Alex Honnold and Hazel Findlay as they head to Africa to tackle some of the most challenging rock faces on the continent.

A world-class group of climbers is granted access to the Forbidden Wall, a mysterious rock wall previously closed for decades. Among the climbers is Sean, whose grandfather made an ill-fated attempt 63 years earlier. During the group's ascent, they come face to face with a malevolent force that quickly turns their expedition into a harrowing battle for survival hundreds of feet above the ground.