Big Rock Ridge-Indian Valley Trail Map
Together these three maps complete Harrison's coverage of Marin County. This north central Marin map covers the popular Big Rock Trail, McInnis County Park, and the following Open Space Preserve lands: Marinwood, Terra Linda-Sleepy Hollow Divide, Lucas Valley, Ignacio Valley, Loma Alta, Loma Verde, Pacheco Valle, Indian Valley, San Pedro Mountain, and more.All of Tom Harrison’s wonderful maps to California hiking and recreation areas are shaded-relief topographic maps on waterproof plastic. GPS compatible with complete UTM grid.
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