Hike to Hidden Labyrinths in the Oakland Hills
San Francisco › Sibley Volcanic Regional Preserve
Added by Kim Suarez
Not only does this hike lead to multiple hidden labyrinths, but it is also at the site of an ancient ocean and volcano! A volcano existed here about 10 million years ago. It erupted and formed Round Top Peak, which you can now hike to. Also, years of quarrying have exposed ancient bedrock and a valley where one of the labyrinths exists.
From Skyline Blvd, pull into the staging area for Sibley Volcanic Regional Preserve, you'll see the sign. Parking here is usually easy to find. You'll find an unstaffed visitor center with a restroom, park maps and informational displays featuring the history and geology of the park.
Sibley is a 31-mile trail system, leading along the ridgeline between Wildcat Canyon and Anthony Chabot Park.
Take Quarry Road (the paved road to the right of the visitor center) up until it meets with Volcanic Trail. Follow the trail to the right. It will take you through a eucalyptus forest before opening up to grassy hills. Keep following the trail down to the left and it will open up above the quarry. Look down and you will find the first labyrinth. Keep following the trail to the left to ascend Round Top Peak and discover the second labyrinth along the way.
This is a short hike, only 2.5 miles total, but there are no water fountains along the way, only at the visitor center.
- Day Pack (snacks, first aid kit, compass, whistle, bug spray, flashlight)
- Trail Map (You can pick one up at the visitor center)
- Comfortable Hiking Shoes
Please respect the places you find on The Outbound.
Always practice Leave No Trace ethics on your adventures. Be aware of local regulations and don't damage these amazing places for the sake of a photograph. Learn More
Are we missing something?Suggest an edit
ReviewsLeave a Review
More Adventures Nearby
Hike the Monte Bello Open Space Preserve Loop
San Francisco / Monte Bello Open Space Parking
This hike is best done in the late fall, winter, and spring so that the creek is running and the hills are green.
Hike Montgomery Woods State Nature Reserve Loop
San Francisco / Montgomery Woods SNR
This is a great find. We saw it on the map it was on the way from Mendocino to our next stop, Napa Valley. So glad we took the time to visit.