Mountain Bike! Los Angeles County has every conceivable type of mountain bike accessible terrain, from remote, loamy oak forest floor singletracks without a person in sight, to roller coaster, rock-garden filled chutes that will give you plenty of thrills.This is must-have literature for the cyclist who is eager to explore the wonderful terrain that housed the genesis of mountain biking in the late seventies. In this trail guide you'll find detailed maps of carefully planned routes, some popular and some unknown to many, as well as comprehensive descriptions of what hazards and delights you'll encounter along the way.