Everest Winter Attempt and Tragedy. A large Korean expedition led by Kim Ha-Kyung with 25 members attempted to climb Everest by the South Col route in winter. They apparently reached the South Col on December 29 but could go no higher. There was an unusual tragedy. One of their porters died from high-altitude sickness, an unusual cause of death among the Sherpas, who are bom and live at altitudes well above sea level.