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A man snowboards down the North Face of Mount Everest with a sun flare in background Stock Photo - Alamy
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Marco Siffredi Everest 2001 Première descente Face Nord Couloir Norton snowboard Himalaya alpinisme - YouTube
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Twitter 上的Everest Today:"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 & attempted
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See You Tomorrow: The Disappearance of Snowboarder Marco Siffredi on Everest: Evans, Jeremy: 9781493053032: Amazon.com: Books
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