Marco Siffredi was a french mountaineer and snowboarder who disappears on a mountain, specifically when attempting to snowboard down mount Everest. 
He rose to fame in extreme sports because of his daring nature and can-do attitude on mountains. 
Siffredi's snowboard attempt of Mount Everest was a pivotal moment for snowboarders and secured Siffredi a title in the history books. 
Marco Siffredi vanished on an expedition and speculation surrounds his whereabouts today.
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Students Suffer Outdoor Disaster Due to Government Negligence

Occurrence is a captivating weekly podcast for those who can’t get enough of hearing the intriguing twists of everyday events gone awry. Every Thursday, Tatiana tells the mind boggling details surrounding these stories.