The Impossible ClimbOne slip, one false move, one missed toehold, and you're dead. On 3 June 2017, veteran adventure journalist and professional climber Mark Synnott was in Yosemite to witness something that only a handful of people knew was about to occur: the most famous climber in the world, Alex Honnold, was going to attempt to summit one of the world's most challenging ascents: a route called Freerider on the notorious rock formation, El Capitan. It is an