Does today's visitor trekking Yosemite National Park find it much different from what John Muir encountered a century ago? Thomas and Geraldine Vale retrace Muir's path, based upon journal descriptions of his activities and experiences during his first summer in the Sierra Nevada Mountains. From the foothills through Yosemite Valley and on up to the Tuolumne Meadows, the Vales follow the present roads and trails that crossed Muir's route, imagining...