Australian mountaineer Lincoln Hall, on the back of a yak and with his hands bandaged, prepares to depart from Advanced Base Camp at 6400m (20,800ft) on Mount Everest, for a lower camp May 28, 2006. Hall, who was thought to have died near the summit of Mt Everest was found alive after spending a night out on the world's highest mountain, but remains severely ill with frostbite and altitude sickness.[Reuters]