Published in 2002, Impassable Canyon is a collection of Matt's finest Middle Fork photographs. Accompanied by essays, narratives, and interviews the book offers the complete Middle Fork experience for anyone who has floated, or hopes to float through these beautiful canyons.

"Thorough, Nuanced, Expansive, jaw-droppingly beautiful, Matt Leidecker's Impassable Canyon, a photographic journey down the Middle Fork of the Salmon River, gives us exactly what most coffee table books about the West fail to: a sense of truly experiencing a landscape as the book's pages are turned."

-Christophe Dombrowski for Big Sky Journal