These three preserves form a contiguous band of undisturbed open space
encompassing virtually the entire northern slope of eastern Big Rock
Ridge. The slopes are steep, the canyons deep, and first-time visitors
never fail to marvel at the expanses of rugged chaparral and woodland
found here. The fire roads that run through these preserves follow
ridgelines, and all of the access routes are steep, but the spectacular
views and the sense of solitude make the climbing worthwhile. The
fire roads in the Pacheco Valle Preserve connect with roads that lead
through public lands managed by the Lucas Valley Homeowners Association
and the Marinwood Community Services District. Altogether, these unspoiled
tracts of land allow for long day hikes (or rides) over the entire
east end of Big Rock Ridge.
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Featured Species at this preserve:
 White-lined Sphinx Moth

Lark Sparrow
 American Kestrel
 Foothill Penstemon
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