On a clear day you can see as far as Point Reyes from this park adjacent to the Marin Headlands. Trails loop through groves of eucalyptus and bay laurel. In the spring you will find lupine and California poppies. In summer, the grasses turn golden, and by late summer you can find fennel, sagebrush, and blackberry bushes.
- The Valley is most easily accessed by parking alongside Tennessee Valley Road.
- Trails are varied and loop through mixed woodlands to a pond that flows vigorously in the rainy season and trickles away to nothing by late summer.
- The trail loop begins on the single-track Oakwood Valley Trail and finishes on the broad Fire Road Trail. The trail can be taken in the other direction as well.
Former inhabitants of Oakwood Valley planted eucalyptus trees to mark boundaries and serve as windbreaks. Unattended over the last 20 years, these trees have grown into dense groves and have displaced oaks and local flora that serve as habitat for coyotes, butterflies, and other fauna.
Eucalyptus also posed the threat of fire as the aromatic oil secreted by its leaves is highly inflammable. The trees have been since removed and replaced by native plants.