take 10–12 hours to complete the passage. "Camp I" on Everest's South Col route is typically slightly beyond the top of the Khumbu Icefall. 2014 avalanche Around 6:30 am local time on 18 April 2014, 16 Nepalese climbers were killed by an avalanche in the Khumbu Icefall. Only 13 bodies were recovered. Nine others sustained blunt trauma injuries. The climbers were preparing the route through the dangerous icefall for the spring climbing season when the avalanche engulfed them. References Glaciers of Nepal Mount Everest