Covers the area between the Mt. Tam and Pt. Reyes maps with most detailed map of Audubon Canyon Ranch, plus Marin Municipal Water District Lands and Open Space Preserves: Loma Alta, Gary Giacomini, Roy's Redwoods, French Ranch, White Hill, Cascade Canyon, and more. All of Tom Harrison’s wonderful maps to California hiking and recreation areas are shaded-relief topographic maps on waterproof, tear resistant plastic. GPS compatible with complete UTM grid.