In the high-stakes pursuit of big-wall climbing, the Shark’s Fin on Mount Meru may be the ultimate prize. Sitting 21,000 feet above the sacred Ganges River in Northern India, the mountain’s perversely stacked obstacles make it both a nightmare and an irresistible calling for some of the world’s toughest climbers. In October 2008, renowned alpinists Conrad Anker, Jimmy Chin and Renan Ozturk arrived in India to tackle Meru. Their planned seven-day trip quickly declined into a 20-day odyssey in sub-zero temperatures with quickly depleting food rations. Despite making it to within 100 meters of the elusive summit, their journey, like everyone before them, was not a successful one.