The Tri-Canyon area of the Wasatch Mountains just southeast of Salt Lake City is popular year round for hiking, camping, rock climbing, biking, skiing, and snowboarding.  This book is a detailed atlas covering an area of 216 square miles of these canyons, presented in a completely new way.  Using anaglyphs to present three-dimensional data in a flat book, twenty-one maps provide a new view of the relief characteristic of one of Utah's most beautiful areas.  The photo spread provides two views of each area: a US Geological Survey topographic map on the right page and a color aerial photograph on the facing page, both converted into stunning 3-D.  This atlas provides both a novel and useful resource for hikers, geologists, and lovers of the canyons--complete with 3-D glasses.