The climbers were navigating the Khumbu Icefall when a serac collapsed above the glacier.
“Worst Day of Our Lives”: Epic Descent from the North Ridge of Nuptse with Doug Scott, Al Rouse, Georges Bettembourg
"I ran, ice axe gripped in one hand above my head, stretching for the other side, but . . . horror . . . the edge collapsed and I was falling."