Long considered impossible, coveted by many and attempted by a few, the Fitz Traverse has fueled the imaginations of climbers in Patagonia for decades. Tracing the iconic skyline of Cerro Fitz Roy and its six satellite peaks, it spans four miles and 13,000 feet across snow and ice-covered rock, with epic route finding and endless rappelling. Seizing their chance during a rare extended weather window, Tommy Caldwell and Alex Honnold went big. The pair completed the first ascent in a five-day push during February 2014. Watch now on The Cleanest Line here: