Swiss snowboarder Ueli Kestenholz, who won bronze in snowboarding's Olympic debut at the 1998 Nagano Games, has died after being caught in an avalanche in Switzerland. The 50-year-old was snowboarding with a friend who was skiing in the Lötschental Valley in Valais canton on Sunday when the avalanche struck. Kestenholz also became snowboardcross champion at the X-Games twice.