One of the proudest things for me with this film [The Fourth Phase] is that year after year we put ourselves right out there making it and no one got seriously injured.

We faced blizzards, sub-zero temperatures, and of course dangerous snow conditions and vertiginous drops. That's what you get when you're working with fickle mother nature - you start out with a solid plan and it always changes, so you have to evolve and adapt.

It's probably the most personal project [The Fourth Phase] I've done, which changed the dynamic a little bit.

We started out making a film [ The Fourth Phase] about the incredible snow we get at home in Wyoming, the journey soon macroed out into this epic 16,000 mile trip around the North Pacific, taking us to locations in Japan, Alaska, the Kamchatka Peninsula in far-eastern Russia, and back to Jackson Hole, Wyoming.

We're all doing what we love. It's how we express ourselves - operating in a space where you don't know if something is possible or not.

Bryan [Iguchi] had this beautiful philosophy about our connection with these incredible cycles. There's a line from one of his poems that always stays with me about 'This process we follow; this cycle we ride' and it's almost become a strap line for the film.

The Tokyo Dome Big Air contest (in 2003) was my first trip to Japan. I think I won it with a double back or something. Those events were fun. I was underaged, like 19 or 20, and going over to Japan in the very beginning was insane. It was amazing.