Your typical backcountry ski film usually contains a number of key ingredients. Firstly and most obviously, it must feature high-level, heart-in-mouth skiing: big, gut-wrenching drops must be landed; sketchy entries into steep, narrow couloirs must be stuck; and high-velocity turns must throw buckets of feather-light powder snow into pristine blue skies. Secondly, there should be an element of terrain porn: in addition to close-ups of the talent, there should also be a few pull-back shots showing the riders in question as tiny specks flying down vast, intimidating sections of mountainside. There should be atmospheric musical accompaniment for the action sequences, of course, perhaps a bit of chat from the stars, and last but by no means least, there must always, always be a crash reel at the end. As the old saying goes, if you’re not falling you’re not trying, and nothing puts all those perfect descents into perspective quite like seeing a few proper, full-on wipe-outs – ideally of the kind that North Americans describe as a “yard sale” as skis, poles and sundry other bits of kit are sent flying all over the mountainside.