By Tom Slater (Author), Chris Summit (Author), Steve Edwards (Author), Marty Lewis (Author) California Road Trip: A Climber’s Guide Northern California is an ideal guidebook for any climber, local or visitor, traveling to Northern California. Its use of maps, photos, topos, and in-depth area information will get climbers on the path to adventure from the Pacific to the Sierra. Over 2,000 routes and over a hundred crags in Northern California await your discovery. ISBN-10: 0982498802 ISBN-13: 978-0982498804