Virtually every single trail in Yosemite National Park is described in this classic guidebook, together with the scenery and natural history found along each trail. View the soaring granite cliffs and waterfalls of Yosemite Valley, or take in the breathtaking vista from Glacier Point. Explore the impressive groves of giant sequoias and hike the spectacular, glacier-carved backcountry. The major trails leading into the park are also described in equal detail--trails in the Emigrant, Hoover, and Ansel Adams wildernesses. Have you ever wondered why Yosemite Valley is so deep? How the giant sequoias acquired their present distribution? Why the vegetation changes with altitude? How Pothole Dome got its potholes? The answers to these questions and many others are found inside this guidebook. Also included is the most up-to-date, topographic map available of Yosemite and vicinity, showing over 1000 miles of trails, all of them personally hiked by the author or his assistant.