In the current crop of ski and snowboard films you hear a lot about “progression.” Progressive tricks, progressive terrain, every movie tries to offer a glimpse of the future of skiing or snowboarding.

But with the threat of global warming, what is the future of snowy winter fun? Is burning endless gallons of helicopter fuel filming double-corking tricks from the bird’s-eye perspective progression or a coffin nail?

For green-minded South Lake Tahoe-based production company Leeward Cinema, progression doesn’t stop when their riders land a sick trick. In Leeward’s new release, “My Own Two Feet,” progression goes a step — or actually thousands of steps — beyond by introducing a new standard of energy use for the ski film industry: The film was shot in the Sierra wilderness using only human power for snow travel, the first such movie of its kind.

The brainchild of Leeward director and founder Chris Edmands, “My Own Two Feet” tells the story of a winter’s worth of adventures that found a top-notch crew of riders, including Jeremy Jones, Dave Downing, Tom Burt, Josh Dirksen and Tim Eddy, splitboarding, camping and shredding one step at a time.