Patwino Worrtla Kodoi Dihi

Located among the ridges that overlook the Suisun Valley, Patwino Worrtla Kodoi Dihi Open Space Park is a 1,500-acre park featuring stands of blue and live oak, chaparral landscapes, and stunning views from its ridges.

Patwino Worrtla Kodoi Dihi (pronounced: War.klaw Kaw.doy De.he) means “Southern Rock Home of the Patwin People” in the Patwin language.

The Tribal Council of the Yocha Dehe Wintun Nation bestowed this name to honor the significance of the land for the Patwin people native to this region.
At present, the park is accessible to the public only through docent-led monthly hikes, volunteer days, and by special appointments. To learn about recurring and special opportunities to visit, please visit our events and activity calendar. The other way to access the park is to become an Oak Woodland Docent. Trained docents lead hikes, perform important volunteer work, and conduct monitoring projects. Training sessions recur each year.

There is no set opening date for regular public use of the park. We anticipate opening the park for regular public use no sooner than late spring or early summer of 2024.

Below are answers to questions covering park basics, rules of conduct, natural features, and future plans for upcoming projects related to opening Patwino Worrtla Kodoi Dihi Open Space Park.

We also encourage you to read this brochure, which outlines a vision for the park and highlights the All People’s Trail.

Patwino Worrtla Kodoi Dihi Open Space Park - Frequently Asked Questions

PARK BASICS (Updated January 2024)

• Where is the property located?
The entrance to the property is located at 2061 Rockville Road, Fairfield, CA 94534. It is on the north side of Rockville Road (across from Rockville Hills Regional Park), approximately two miles from Solano Community College. Though technically within the city limits of Fairfield, it is in the census-designated place called Green Valley, which retains a rural character. It is slightly more than an hour’s drive from San Francisco or Sacramento in light traffic.

• Is public transportation available to visit PWKD?

• What gear/equipment do I need to visit the property?
This park requires the same preparations as any other semi-mountainous hike in the Bay Area: sturdy, durable footwear, protection from the sun, a phone for emergencies, and plenty of water. Hikers who use insect repellent should carry it.

• How many miles of trails are at the park?
There are twelve miles of multi-use trails for hikers, cyclists, and equestrians. A .6-mile accessible loop trail graded and surfaced for users of wheelchairs, walkers, and strollers is pedestrian-only. The Doris Klein Bay Area Ridge Trail, a section of the 550-mile loop known as Bay Area Ridge Trail, traverses the park.

• Is the park free to visit?
Joining docent-led hikes is free. A parking fee will be charged once the park is open. The fee has not yet been determined.

• What are the accessible/ADA amenities at the park?
The .6 mile “All Peoples Trail” meets outdoor accessibility standards and includes ADA picnic tables along its scenic and gentle loop through the park. When completed, the Visitor Center will feature ADA-compliant bathrooms. The native plant gardens inside the park can be accessed immediately from the parking lot.

• Are there bathrooms in the park?
Presently, there is only a Porta Potty near the parking lot. When it is built, there will be ADA-compliant bathrooms with two toilets.

• Is there drinking water available?
There is presently no drinking water available in the park. A drinking fountain and water bottle filling station will be built into the Visitor Center.

• Is there shade throughout the park?
There is enough shade to get out of the sun, but not to hike for great distances in the shade. While trees grow throughout the park, many shed their leaves and are set back too far from the trail to offer consistent shade. People visiting on sunny days should still wear hats and sunscreen. Eventually, shade structures will be installed at different areas of the park for relief from the sun.

• Are there cows on the property?
Yes, and you will often see and/or hear them. A fifth-generation rancher grazes the property and cattle are essential to the management strategy for this open space. By keeping grasses low, cattle decrease fire risks and improve the conditions for native plants. The location of the cattle changes throughout the year and the day. Cattle are not aggressive animals. Dozens if not hundreds of parks in California are grazed by cattle or sheep. If you are apprehensive about hiking around cows, we encourage you to check the calendar for the next Communing with Cattle courses with Project Manager Jasmine Westbrook-Barsukov. Participants in the course learn how to have a great experience sharing the land with cows by reading their body language and sending positive cues.

The native plant garden and picnic area near the entrance are entirely fenced off from cattle.

• Are there any dangerous plants or animals on the property?
Yes, but no more than would appear in any comparable open area of this size. Rattlesnakes live here, ticks climb the grasses, mosquitos are a seasonal nuisance, and poison oak is a widespread native species that can cause rashes at all times of the year. The surest way to avoid negative encounters is to stick to clearly marked trails and pay attention—the very same policy that will keep you from stepping on wildlife or treading on vulnerable plants.


• Can I bring my dog?
No. Because of wildlife, sensitive habitat, and livestock, dogs are not allowed on the property. The only exceptions are service dogs and the working dogs the grazers use when working with the cattle.

• Can I ride my electrical bike or motorcycle on the trails?
Class 1 bikes are allowed on multi-use trails.

• Is barbequing/grilling allowed?
Due to fire danger, no BBQs or grills are allowed on the property.

• Is smoking allowed?

• Am I allowed to have alcohol in the park?

• Can I hunt at this property?
No. Hunting at this property is strictly prohibited. Carrying weapons is not allowed on Solano Land Trust properties.

• Can I camp at this property?
No. Due to fire risk and other factors, camping is not allowed on the property.

• Can I cross the road from Rockville Hills Regional Park?
No. There is presently no safe crossing between the parks. Both parks are connected via the Bay Area Ridge Trail, but this route of the trail needs further development before it can be contiguously hiked and linked to Skyline Wilderness Park in Napa.

• Can we reserve the park (or its picnic tables) for events?
Not at this time.


• What type of wildlife will I see visiting the park?
Animals who live in the park include California ground squirrels, acorn woodpeckers, golden eagles, western fence lizards, Columbian black-tailed deer, California newts, oak titmice, and western bluebirds. Trail cams and observant docents have also detected great horned owls, bobcats, raccoons, skunks, and feral pigs.

• When are the wildflowers in bloom?
It depends on the timing, duration, and intensity of the rain. Generally, late January through June will have some blooms, with March through April tending to be the most vivid time. Common spring flowers include Sky Lupine, California golden poppies, Blue Dips, Purple Owl’s Clover, Seep Monkey Flower, and Goldfields. One of the only known locations of the rare Nodding Harmonia (Harmonia nutans) lies within this park; volunteers participate in an annual count of the flowers every spring.

• Can we pick flowers, leaves, and rocks?
No. Please take only pictures and leave only footprints. The interpretive native garden in the welcome plaza is designed for handling and smelling plants up close, but not for collecting cuttings or damaging the plants.


• Are there tie racks and parking available for horse trailers?

• Can I buy an annual regional park pass?
Not at this time. Solano County does not have its own parks district. Solano Land Trust does not issue separate annual passes.

• Can I have a wedding ceremony/reception in PWKD Open Space Park?
Currently no.

• Are there volunteer opportunities in the park?
Yes! Opportunities for volunteers include trail maintenance, community science, and becoming docents who lead tours through the park. Oak Woodland Docents perform important monitoring and restoration work in the park. Becoming a docent is the surest way to have access to the property. See the event calendar for details.

• Can I take my horse through my personal gate onto the property?
At this time, no one has private access due to liability and resource protection.

• Will hikers, bikers, and equestrians all be using the same trails?
All trails except for the All People’s Trails will be multi-use.

• What hours and days will the park be open?
Operating hours have not yet been determined.

• Will overnight camping be allowed on the property?
Due to fire liability, no camping will be allowed.

• Will there be a park ranger?
We are researching the best model to use to make sure the property is safe for our visitors and neighbors.

• What should I know about fire risks?
We are working with local fire personnel and taking steps to reduce fire risk. A new water system fills seven different troughs which can be used to fight fires throughout the property. Cattle grazing reduces excess vegetation. The park closes on red flag days.


• Does the park have an official opening date?
Not at present. We hope to open the park in late spring or early summer of 2024. Opening this 1,500-acre park is a top priority for Solano Land Trust but it is no easy feat, and the price tag is significant. Please consider making a donation to support the opening process.

• What changes can visitors expect in the future?
Upcoming changes to the park include the creation of a Welcome Plaza, ADA-compliant restrooms, further expansion of the interpretive Native Plant Garden, water filling stations near the entrance, shade structures along the All People’s Trail, wayfinding and interpretive signage throughout the park, and a large metal sculpture of an oak tree designed by Ken Hunter and created by Hunter and Dave George.

Please see our Events Calendar for scheduled activities.

You can send an email to us at with questions or concerns.

 Photos by Tom Muehleisen