By Rachel Puryear
Tucked into the East Bay hills near Oakland and Orinda, in Alameda County in California, Sibley Volcanic Regional Preserve is a fascinating place to spend a few hours hiking, enjoying the views, and exploring an ancient volcanic landscape.
Although there is no active volcano here today, Round Top is the remnant of a volcano that was active millions of years ago. The preserve’s trails pass through rolling grasslands, shaded areas, exposed rocks, and landscapes shaped by long-ago volcanic activity. An unstaffed visitor’s center near the Skyline Boulevard entrance includes displays about the area’s geology, along with a self-guided volcano tour.
Exploring the Park’s Trails
Several trails make it possible to create a hike that suits your time and energy. The volcanic trail follows an old quarry road and includes many of the self-guided tour stops. Round Top Loop circles the park’s prominent summit, while the longer Bay Ridge Trail passes through the preserve along the ridgeline. On clear days, hikers may enjoy wide views across the East Bay, including towards Mount Diablo.
One of Sibley’s most unusual attractions is its labyrinths. Visitors can walk the winding stone paths slowly and quietly, making them an appealing place for reflection or meditation. Please treat these places respectfully and leave any objects you find there undisturbed.
The preserve is also a good destination for people who want a less strenuous visit. Round Top Road is paved to the top, and a 600-foot (183 meters) paved wheelchair path leads north from the visitor’s center to a viewing platform. The paved Quarry Road provides another access option from the Old Tunnel Road staging area.
More About Visiting This Park
Dogs are permitted in the reserve, although rules differ on nearby trails, so check the signs before continuing into adjacent parkland. Bring water, especially on warm days, and wear sturdy shoes for muddy or uneven sections. There is no public Wi-Fi, and cell coverage may be inconsistent, so downloading a map ahead of time is a good idea.
Sibley is a lovely example of how much natural and geological history can be found close to a major city. It is not a destination that requires an entire day or an elaborate itinerary. A short hike, a quiet walk through the labyrinth, and a few minutes taking in the East Bay views can make for a memorable outing.
As always, stay on designated trails, pack out what you bring in, keep dogs under control; and leave the rocks, plants, wildlife, and labyrinths as you found them. The preserve’s unusual landscape is worth exploring – and also worth protecting.
See here for more about visiting Sibley Volcanic Regional Preserve, including more about accessibility information.
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