The Call of the Ice was written during Moro's dramatic winter attempt on Nanga Parbat in 2012, his twelfth attempt on that mountain during weather delays and other breaks in the climb. Moro reflects on past climbs and partners, including the death of his longtime friend and climbing partner, Anatoli Boukreev, on Annapurna, his mourning when Boukreev died, and his subsequent recovery; Denis Urubko and the nature of climbing partnerships; two attempts on Shisha Pangma; Broad Peak; Makalu; and Gasherbrum II, which he, Urubko, and Cory Richards completed in February 2011 despite near-tragic moments when they miraculously escaped after being swept away by an avalanche. Many of Moro's climbs do not result in a summit and he explains why his interest lies in the attempt itself. In addition to these reflections, we relive in real-time his attempt on Nanga Parbat, which he and Urubko had to abandon after 51 days and 6600 meters