Teton Gravity Research, described on their website as "an action sports media company committed to fueling progression through its films and website," was filming pro skier Ian McIntosh in the Neacola mountain range of Alaska when disaster struck.
McIntosh, 24, set off from his perch at the top of a mountain with an incredibly steep drop. All was well until he fell into a five-foot trench during one of his turns, which led to a 1,600-foot long tumble down the mountain, during which he was unable to stop. According to TGR,
"TGR Co Founder, Todd Jones, says [the accident] “was the most terrifying crash I’ve ever seen.” While filming for Paradise Waits up in the Neacola range of AK, Mac dropped into a line he thought he had studied thoroughly enough, only to fall into an unseen five foot deep trench on one of his first turns.
'From there, my slough took over and their was no way to stop, I pulled my airbag to help prevent against any possible trauma injuries as I tumbled to the bottom,' he said. While attempting to regain his footing, Mac lost a ski and cartwheeled over 1,600 feet in under a minute."