" in October 1993, Gary Ball died of cerebral edema—swelling of the brain brought on by high altitude—during an attempt on 26,795-foot Dhaulagiri, the world’s sixth-tallest mountain. Ball drew his last, labored breaths in Hall’s arms, lying comatose in a small tent high on the peak. The next day Hall buried his friend in a crevasse. "

― Jon Krakauer , Into Thin Air: A Personal Account of the Mount Everest Disaster