Roadside Geology along Sunrise Highway clearly explains the exciting geology of the most fascinating and highest mountain highway in San Diego County with abundant photos, maps, and illustrations. When you go to San Diego's beautiful back country and want a better understanding of the local geology be sure to grab this book! This self-guided tour starts just 47 miles east from downtown San Diego. The well-known author, Dr. Michael Walawender, holds the title of Emeritus Professor, San Diego State University.