A dream team of six elite climbers mount an expedition to one of the world's last great climbing frontiers: the remote frozen towers of Antarctica. Jimmy Chin and Conrad Anker tackle a new route on the 3,600foot Ulvetanna; Savannah Cummins and Anna Pfaff summit the towering Holtanna; and Alex Honnold and Cedar Wright make a harrowing and hilarious blitz of 13 different spires s...