200458 mins

Nestled deep within the fjords of Greenland’s southern coast stands the “Thumbnail,” a granite wall, nearly a mile high, posing as one of the greatest challenges to the most advanced of all mountaineers. Yet, two intrepid adventurers, Cecilia Buil and Roberta Nunes, considered to be two of the world’s best mountain climbers, are determined to conquer this towering rock giant.

They approach the wall by kayak, rowing for several days through icebergs, passing whales and seals. Climbing, sleeping, and working together, the pair ascends the giant. Over the course of a week, they attempt to reach the highest pinnacle, a point on the cliff that has yet to be ascended by any climbing team. If they make it, they will break a world record for the longest open route climbed by women.