Located deep in the Saint Elias mountains where Alaska, British Columbia, and the Yukon converge, there is a place most skiers and snowboarders only dream of visiting. Brought to you by The North Face and Sherpas Cinema, Tsirku is a big-mountain adventure ski film featuring snowboarder Ralph Backstrom and skiers Hadley Hammer and Sam Anthamatten, who set out to tackle the fabled Corrugated spine lines of the Tsirku Glacier.