Uživatel Everest Today na Twitteru: „Gone on this day, 2002.09.08; Marco Siffredi, French climber, who ascended Everest in 2001 & descended the Norton Couloir by snowboard. In 2002 he ascended #Everest again
Snowboarding mystery still shrouds Everest
View From The Top Of Mount Everest
The Brief Life and Unexplained Disappearance of Snowboarder Marco Siffredi