Sibley Volcanic Regional Preserve: A Geological Wonder

Explore the remnants of a 10-million-year-old volcano, hike scenic trails, and discover hidden labyrinths in Oakland's unique Sibley Volcanic Regional Preserve.

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Sibley Volcanic Regional Preserve

Sibley Volcanic Regional Preserve, nestled in the Oakland Hills, offers a unique opportunity to explore the remnants of a 10-million-year-old volcano. Originally named Round Top Park, this geological wonderland features dramatic landscapes shaped by volcanic activity and quarrying. Hike through diverse trails, discover hidden labyrinths, and marvel at panoramic views of the Bay Area. Sibley's trails wind through grasslands, forests, and past exposed volcanic formations, providing a fascinating glimpse into the region's ancient past. With its rich history, stunning scenery, and intriguing geological features, Sibley is a must-visit destination for nature lovers and outdoor enthusiasts seeking a distinctive East Bay experience. The preserve's easily accessible trails and unstaffed visitor center make it a perfect spot for a self-guided adventure, offering a blend of natural beauty and geological intrigue.

A brief summary to Sibley Volcanic Regional Preserve

Oakland, California, 94611, US
+1888-327-2757
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Local tips

Pick up a self-guided tour brochure at the visitor center to learn about the preserve's unique volcanic geology.
Wear sturdy shoes and be prepared for changing weather conditions, as the trails can be rocky and exposed.
Visit the Mazzariello Labyrinth for a moment of contemplation and leave a small trinket as a gesture of goodwill.
Bring water, especially on warm days, as there are limited water sources within the preserve.
Keep an eye out for wildlife, including deer, coyotes, and various bird species, but remember to keep a safe distance.

Getting There

Driving

From Highway 24, take the Fish Ranch Road exit just east of the Caldecott Tunnel. Continue 0.8 miles to Grizzly Peak Boulevard. Turn left onto Grizzly Peak Boulevard and drive 2.4 miles to Skyline Boulevard. Turn left onto Skyline Boulevard and proceed approximately 0.1 mile to the preserve entrance on the left. Parking is free at the Sibley Main Staging Area (6800 Skyline Blvd, Oakland, CA 94611).
Public Transport

The closest bus line, AC Transit #305, runs only on Tuesdays and Thursdays, from mid-morning to mid-afternoon. From Lake Merritt BART, 19th Street BART, or Rockridge BART, take AC Transit bus 59 or 59A to the Montclair Transit Center. Transfer to AC Transit bus 305 and exit at the stop on Colton Boulevard and Ridgewood Drive. Walk the short distance from Colton to Skyline Boulevard, turn left, and proceed to the preserve. It is a mostly level, 0.9-mile walk that passes the Huckleberry Preserve staging area. A single ride on AC Transit costs $2.50.

Discover more about Sibley Volcanic Regional Preserve

Sibley Volcanic Regional Preserve, a hidden gem in the East Bay, invites visitors to step back millions of years and explore the fascinating remnants of a long-extinct volcano. Located in the Oakland Hills, the preserve spans 928 acres, offering a diverse landscape shaped by ancient volcanic activity, historic quarrying, and the natural forces of erosion. Originally established in 1936 as Round Top Park, Sibley is one of the East Bay Regional Park District's original parks, later renamed to honor Robert Sibley, a key figure in the district's formation. The preserve's most prominent feature is Round Top, the 1,763-foot peak that marks the site of the ancient volcano. While the summit itself is occupied by utilities and radio towers and is off-limits to the public, the Round Top Loop Trail encircles the peak, providing stunning panoramic views of the Bay Area. On a clear day, you can see as far as Mount Tamalpais to the north, Mount Diablo to the east, and the distant Sierra Nevada mountains. Sibley's unique geological history is a major draw for visitors. Approximately 10 million years ago, this area was a hotbed of volcanic activity. Over time, the volcano eroded, and quarrying operations further exposed the inner layers, creating a remarkable cross-section of volcanic formations. The Volcanic Trail, a former quarry haul road, is now a self-guided tour that winds past various geological features, including basalt flows, cinder cones, and lava tubes. Informative brochures available at the unstaffed visitor center provide insights into the preserve's geological past. Beyond its geological wonders, Sibley offers a diverse range of hiking experiences. The 31-mile East Bay Skyline National Recreation Trail traverses the preserve, offering stunning ridgeline views and connecting to other regional parks like Wildcat Canyon and Anthony Chabot. Shorter trails, such as the Quarry Trail and Pond Trail, provide access to different areas of the preserve, each with its own unique charm. The trails wind through grasslands, forests of eucalyptus and Monterey pine, and past rocky outcrops, offering a variety of landscapes to explore. Adding to Sibley's mystique are the hidden labyrinths found throughout the preserve. The most well-known is the Mazzariello Labyrinth, created in 1989 by East Bay resident Helena Mazzariello as a gift to the world. This intricate stone structure invites contemplation and meditation, with visitors often leaving small trinkets and talismans in its center. A smaller, heart-shaped labyrinth can be found near Post No. 4 on the Round Top Loop Trail, adding to the preserve's sense of wonder and discovery. Sibley is also home to a diverse array of plant and animal life. Coyote brush dominates the landscape, but you can also find lupine, California bay, coast live oak, and madrone. Keep an eye out for wildlife, including deer, coyotes, and various bird species. Cattle grazing is also a part of Sibley's ecosystem management, helping to reduce wildfire risks and maintain natural habitats. For those seeking a longer hike, Sibley connects to other regional parks, including Tilden Regional Park to the north and Redwood Regional Park to the south. These connections offer opportunities for extended explorations of the East Bay's natural beauty. Whether you're a seasoned hiker, a geology enthusiast, or simply looking for a peaceful escape into nature, Sibley Volcanic Regional Preserve offers something for everyone. Its unique blend of geological history, stunning scenery, and hidden surprises makes it a truly unforgettable destination. Remember to wear sturdy shoes, bring plenty of water, and be prepared for changing weather conditions. And don't forget to pick up a self-guided tour brochure at the visitor center to fully appreciate the wonders of this remarkable preserve. Sibley's trails offer a variety of experiences. The Round Top Loop Trail provides panoramic views, while the Volcanic Trail delves into the preserve's geological past. The Quarry Trail leads to the intriguing labyrinths, and the Pond Trail offers a tranquil escape to a small pond. Each trail offers a unique perspective on Sibley's diverse landscape. The preserve's history is also intertwined with human activity. The area was once heavily quarried for its volcanic rock, which was used in construction materials. Today, the remnants of these quarrying operations add to the preserve's unique character, creating dramatic landscapes and exposing fascinating geological formations. Sibley Volcanic Regional Preserve is more than just a park; it's a living museum of geological history, a testament to the power of nature, and a place of peace and contemplation. Its unique blend of natural beauty, geological intrigue, and human history makes it a truly special destination in the East Bay.

Iconic landmarks you can’t miss

Temescal South Entrance

2.4 km

Explore the serene trails and breathtaking vistas at Temescal South Entrance, a natural oasis in Oakland perfect for outdoor adventures and relaxation.

Merritt Mausoleum

3.7 km

Discover the Merritt Mausoleum, a historical landmark in Oakland, CA, celebrating the city's rich heritage amidst serene gardens and stunning architecture.

Grizzly Peak

3.7 km

Discover the breathtaking views and serene hiking trails at Grizzly Peak, one of Berkeley's most scenic outdoor destinations.

Clark Kerr Campus

4.1 km

Discover the charm of Clark Kerr Campus in Berkeley, a serene retreat showcasing beautiful architecture and rich university culture.

Maison D'Etre

4.3 km

Explore the enchanting Maison D'Etre in Oakland for unique gifts, antique furniture, and cozy bedding that capture the essence of California's charm.

Piedmont Funeral Services and Mountain View Cemetery

4.4 km

Explore the tranquil beauty of Piedmont Funeral Services and Mountain View Cemetery in Oakland, where history and serenity meet stunning Bay Area views.

Chapel of the Chimes Oakland Funeral Home, Crematory and Columbarium

4.4 km

Discover the serene beauty of the Chapel of the Chimes, a unique architectural gem and tranquil sanctuary for reflection in Oakland, California.

Chapel of the Chimes Oakland Funeral Home, Crematory and Columbarium

Atomic Garden

4.4 km

Explore Atomic Garden, a charming boutique in Oakland offering unique gifts, home goods, and beautiful plants for your perfect travel memento.

Berkeley Hills

4.4 km

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Julia Morgan Theater

4.5 km

Experience the artistic charm of Julia Morgan Theater, a historic performing arts venue in Berkeley, showcasing captivating performances and rich architectural beauty.

Bilger / Rockridge Quarry Site

4.5 km

Discover the historic Bilger Rockridge Quarry Site in Oakland, California, where rich mining heritage meets stunning natural beauty.

Sigma Phi Society

4.5 km

Explore the Sigma Phi Society in Berkeley, a historical landmark blending rich traditions with vibrant community life, perfect for culture enthusiasts.

Treadwell Mansion & Carriage House

4.6 km

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Joaquin Moraga Adobe (California Historical Landmark No. 509)

4.6 km

Explore the Joaquin Moraga Adobe, a historical landmark in Orinda, California, showcasing the essence of early Californian architecture and culture.

Joaquin Moraga Adobe (California Historical Landmark No. 509)

Koret Visitor Center

4.6 km

Explore Berkeley with ease from the Koret Visitor Center, your essential resource for local attractions, history, and cultural experiences.

Unmissable attractions to see

Huckleberry Botanic Regional Preserve

1.5 km

Explore a unique East Bay treasure: rare native plants, stunning views, and a peaceful escape in the Oakland Hills' Huckleberry Botanic Regional Preserve.

Grizzly Peak Overlook - KPFA Tower pullout

2.0 km

Discover the stunning views and serene sunsets at Grizzly Peak Overlook, a must-visit attraction in Berkeley, California.

Grizzly Peak Overlook - KPFA Tower pullout

Siesta Valley Recreation Area

2.1 km

Experience the natural beauty and tranquility of Siesta Valley Recreation Area in Orinda, CA, a perfect retreat for outdoor enthusiasts and nature lovers.

Grizzly Peak Blvd Overlook

2.5 km

Experience stunning vistas and serene nature at Grizzly Peak Blvd Overlook, a must-visit scenic spot in Berkeley, California.

Temescal Regional Recreation Area

2.7 km

Discover the serene beauty of Temescal Regional Recreation Area, where lush landscapes and outdoor activities await in Oakland, California.

Ostrander Park

3.0 km

Experience the tranquil beauty of Ostrander Park in Oakland, a perfect escape for nature lovers and families with scenic views and lush greenery.

Claremont Canyon Regional Preserve

3.1 km

Discover the breathtaking views and serene trails of Claremont Canyon Regional Preserve, a scenic park in Berkeley, California, perfect for outdoor enthusiasts.

Tilden Park Steam Train at the Redwood Valley Railway

3.2 km

Experience a nostalgic steam train ride through redwood forests at Tilden Park's Redwood Valley Railway. A family-friendly adventure since 1952.

Tilden Park Steam Train at the Redwood Valley Railway

University of California Botanical Garden

3.8 km

Discover the beauty and diversity of plant life at the University of California Botanical Garden, a serene retreat in Berkeley, California.

Monkey Island

3.9 km

Explore the beauty of Monkey Island in Berkeley, a perfect park destination for relaxation, picnics, and outdoor fun amidst nature.

Zachary's Chicago Pizza

4.3 km

Oakland's legendary Zachary's Chicago Pizza in Rockridge: savor award-winning, employee-owned deep-dish and thin-crust pizzas, a true taste of Chicago with a California twist.

Piedmont Park

4.4 km

Discover the natural beauty and recreational charm of Piedmont Park, a perfect urban oasis in California for relaxation and outdoor fun.

Chabot Space & Science Center

4.4 km

Discover the cosmos at the Chabot Space & Science Center, where exploration and education collide in an interactive experience for all ages.

California Memorial Stadium

4.5 km

Explore the historic California Memorial Stadium, home to UC Berkeley's Golden Bears, and enjoy stunning views and rich traditions in the heart of Berkeley.

Big C

4.6 km

Discover breathtaking views and a rewarding hike at Big C, Berkeley's iconic vista point overlooking the stunning Bay Area.

Discover delicious grilled dishes and vibrant nightlife at Henry's Bar & Restaurant in Berkeley - perfect for casual dining or special events.

Explore Bella Vita in Oakland, where unique gifts, stylish accessories, and charming children's clothing await you in a delightful boutique setting.

The Ridge

4.5 km

Discover a vibrant shopping experience at The Ridge in Oakland, featuring diverse stores, delightful dining, and a lively atmosphere that reflects local culture.

Discover the vibrant atmosphere and delightful flavors at George & Walt's, Oakland's premier cocktail bar and grill.

McNally's Irish Pub

4.5 km

Discover the authentic taste of Ireland at McNally's Irish Pub in Oakland, where great food meets lively ambiance.

Freehouse

4.7 km

Discover Freehouse, Berkeley's favorite American restaurant and pub, serving delicious food and drinks in a friendly atmosphere.

The Tap Haus

5.0 km

Experience the lively ambiance at The Tap Haus in Berkeley, a perfect blend of great drinks, pool games, and vibrant nightlife.

Kip’s Bar and Grill

5.1 km

Experience the vibrant atmosphere at Kip's Bar and Grill, where delicious food meets the thrill of sports in Berkeley, California.

Bear's Lair

5.2 km

Discover Bear's Lair, a lively pub in Berkeley offering a delightful mix of American cuisine and a vibrant atmosphere.

Morgan's Bar & Lounge

5.4 km

Discover the enchanting Morgan's Bar & Lounge in Berkeley, where expertly crafted cocktails meet a cozy, historic ambiance.

Kingfish Pub & Cafe

5.4 km

Discover the lively charm of Kingfish Pub & Cafe in Oakland, where delicious food meets an extensive drink selection in a vibrant atmosphere.

The Starry Plough Pub

5.5 km

Experience the vibrant culture and delicious flavors at The Starry Plough Pub, a beloved Berkeley destination for food and live music enthusiasts.

Roses' Taproom

5.5 km

Discover the vibrant atmosphere and diverse drink selection at Roses' Taproom, a must-visit bar in Oakland's lively Temescal neighborhood.

Your Ultimate Free Travel Guide

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Sibley Volcanic Regional Preserve: A Geological Wonder

A brief summary to Sibley Volcanic Regional Preserve

Local tips

Getting There

Driving

Public Transport

Unlock the Best of Sibley Volcanic Regional Preserve

Buy tickets

Book tours with entry

Book tours without entry

Discover more about Sibley Volcanic Regional Preserve

Iconic landmarks you can’t miss

Temescal South Entrance

Merritt Mausoleum

Grizzly Peak

Clark Kerr Campus

Maison D'Etre

Piedmont Funeral Services and Mountain View Cemetery

Chapel of the Chimes Oakland Funeral Home, Crematory and Columbarium

Atomic Garden

Berkeley Hills

Julia Morgan Theater

Bilger / Rockridge Quarry Site

Sigma Phi Society

Treadwell Mansion & Carriage House

Joaquin Moraga Adobe (California Historical Landmark No. 509)

Koret Visitor Center

Unmissable attractions to see

Huckleberry Botanic Regional Preserve

Grizzly Peak Overlook - KPFA Tower pullout

Siesta Valley Recreation Area

Grizzly Peak Blvd Overlook

Temescal Regional Recreation Area

Ostrander Park

Claremont Canyon Regional Preserve

Tilden Park Steam Train at the Redwood Valley Railway

University of California Botanical Garden

Monkey Island

Zachary's Chicago Pizza

Piedmont Park

Chabot Space & Science Center

California Memorial Stadium

Big C

Essential places to dine

Perle Wine Bar and Restaurant

LIMEWOOD BAR & RESTAURANT

Rick & Ann's Restaurant

Millennium

Wood Tavern

Belly - Rockridge

Crepevine Restaurants

IN THE WOOD

Enoteca Molinari

À Côté

Kitchen Story Oakland

Belotti Ristorante E Bottega

A16

Marica Restaurant

Henry's Bar & Restaurant

Markets, malls and hidden boutiques

Folks' Art

Pelago

Ellington & French

Market

Talisman Antiques

Pretty Penny

Crossroads Trading

Bill's Trading Post

Lesley Evers | Rockridge Store

Nathan & Co

Palm + Perkins

Shangri La Treasures

Koraa

Bella Vita

The Ridge

Essential bars & hidden hideouts

The Graduate

Beer Baron Whiskey Bar & Kitchen

Redfield Cider Bar & Bottle Shop

Ben 'N Nick's Bar & Grill