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

"Impassable Canyon" is a comprehensive journey that begins at the put in at Boundary Creek and continues for 100 miles, dropping 3,000 feet through steep-walled canyons, beneath cliffs of granite, and past beaches of honey-colored sand edged with forests of pine and fir. "Impassable Canyon" offers a firsthand look at the Middle Fork of the Salmon, a river that promises only one thing - a wild and unpredictable spirit.