The idea [of the Fourth Phase ] was that by taking a closer look at where our weather comes from, and the processes involved in making it, we could all walk away with a greater appreciation of water in its various magical forms.

When it comes down to it, it’s pretty simple. Adventure is what you make it. And whether it’s the travel, the discovery or just the feeling of letting go, the only way we’ll ever find out is to get out there and do it. Enjoy the ride.

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.

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.

We pretty much had crazy weather, historically speaking, in every location we filmed [The Fourth Phase]. Nothing has been normal in the past three years.

If we want authenticity we have to initiate it.

I'm really interested in revamping the Supernatural contest, so I'm going to put a lot of effort and energy into that going forward.