Describes and illustrates (b&w photos) 124 day hiking, backpacking, camping, mountain biking, and 4-wheel drive trips through the national parks in the desert backcountry of Utah. Entries include driving directions, route descriptions, locations of every national park campground and interpretive activity, and material on the new Zion transportation system. Introductory material describes the geological and natural histories of each region, and gives advice on desert safety and survival. This second edition reflects changes over the past 10 years. Adkison has written other guidebooks. Annotation c. Book News, Inc., Portland,