Ueli Steck, Swiss mountaineer and rock climber (died 2017)

Ueli Steck was a Swiss rock climber and alpinist. He was the first to climb Annapurna solo via its South Face, and set speed records on the North Face trilogy in the Alps. He won two Piolet d'Or awards, in 2009 and 2014. Having previously summitted Mount Everest, Steck died on 30 April 2017, after a fall during an acclimatizing climb for an attempt on the Hornbein route on the north face of Everest without supplemental oxygen.