Book excerpt: In the wake of his father's death and recently fired from his job, Gil agrees to accompany his father's best friend Syd on a monthlong hike on the John Muir Trail. There's just one problem: Gil hates camping and is woefully unprepared for the rigors of the 200-mile journey. Moreover, he learns Syd may not survive the hike. Set authentically in the High Sierra and fused with insightful accounts of history and ecology, The Trail illustrates how wilderness can serve as our greatest guide.