Shin [Biyajima] rides down with this big ol' Japanese grin and giggle and I'm like what? Two years later, when I started planning the trip, I knew Shin was from the Hakuba area, and I didn't want to come film in Japan without a Japanese rider. Shin had the time and availability, and it worked out perfect.

Sometimes storms come through with wind and blow the features off or sometimes they come in heavy and grow the features to the point where we have to shovel them off again. Leading up to the window for our event we try to get everything lined up and safe for the riders.

I was picking up surfing, which I also fell in love with. Then I was like, man, to combine the two [free ride and surfing ] would be perfect.

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.

I wouldn't even call snowboarding a sport. For me it's just a way of life. It's a chance to finally shut your brain off, and live within the moment. And, for as long as I am able, I will ride until the day I die.

Apart from those other riders there is a whole production team [ of The Fourth Phase] behind the cameras too, hauling hundreds of kilos of fragile and awkward filming equipment up those same frozen landscapes. They're the real heroes.

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.