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The video, uploaded to YouTube, shows McIntosh tumbling down the mountainside for over a minute.
In a blog post, McIntosh said some quick thinking helped him walk away from the fall relatively unharmed.
"I pulled my airbag to help prevent against any possible trauma injuries as I tumbled to the bottom," he said.
Teton Gravity Research co-founder Todd Jones described the fall as "the most terrifying crash I've ever seen."