History Incidents on Instagram: "In 2001, French snowboarder Marco Siffredi achieved something no human had ever done before. He became the first person to descend Mount Everest on a snowboard, riding down the Norton Couloir, one of the mountain’s most dangerous and technical routes. Everest was never meant to be snowboarded. Thin air, unstable snow, deadly crevasses, and unforgiving angles turn even simple movement into a fight for survival. Yet Siffredi didn’t just survive, he rode it with con