Buckle up, you adrenaline junkies, and let the ride begin. This former quarry turned park provides more than ten miles of gut-wrenching, heart-pounding, mountain-biking action. The trails range in difficulty from leisurely four-foot bunny-hops for the intermediate to 30-foot, hold-on-at-all-costs hills for the advanced. The trails run mostly among tall pine and eucalyptus trees, so shade is abundant. But, you equipment-obsessed wacko, you'll still need your camelback water supply in both summer and winter. There are plenty of obstacles, such as large rocks, slippery roots, and hanging tree branches that will keep all riders on their toes. The park also offers parking and bike wash stations at the entrance to the trails, which are maintained by Club Mud -- a group of local mountain-bikers and volunteers.