We join Mike Libecki, Freddie Wilkinson, and Cory Richards as they make their final bid for the top of Bertha's Tower. From their precariously high camp within striking distance of the summit, the team must forge a path through the hollow, jigsaw rock that bands the final section of climbing. Having come so far and battled not only the weather but also back-breaking logistics, they are determined to push on despite the ever-present danger of loose rock. Will they carve their names in climbing history with an Antarctic first ascent or be turned back short of their prize? The First Ascent Of Bertha's Tower In Antarctica | Katabatic, Ep. 4