Josh Wharton is one of America’s top alpine climbers, with light and fast ascents of iconic peaks from Patagonia to Alaska to the Himalaya. His latest first free ascent with Vince Anderson, is called Suerte (5.13a, WI6, M7, 3,500 feet) and it’s located on Jirishanca (20,100 feet) in Peru. This ascent, which took years to…