Sure it's fast, but it's not the way we would choose to get down a mountain. UPI reports a 24-year-old professional skier survived a 1,600-foot fall while filming footage for an extreme sports film in Alaska's Necola mountains. The film production company, Teton Gravity Research, posted a video of Ian McIntosh's plummet to YouTube last week. The company's founder calls it "the most terrifying crash I've ever seen" in a blog post. McIntosh tumbled 1,600 feet in less than a minute while losing a ski. "I pulled my airbag to help prevent against any possible trauma injuries as I tumbled to the bottom," he explains in the blog post. Well that's one way to get viral advertising for your extreme sports video. (More skiing stories.)