The documentary Steep profiles the history and lives of "extreme skiers." The film induces vertigo with its helicopter shots of skiers charging down sheer cliffs, far from any ski resorts with trails or lodges.
These extreme athletes can set off avalanches as they race down mountains at speeds up to 60 mph. They defy death, but don't always escape it: One of the skiers featured in Steep died just days after he was interviewed for the film.
The director and screenwriter, Mark Obenhaus, talks with Jacki Lyden about what sets extreme skiing apart from what even the most proficient Olympic skiers do.