Round Top Views

Discover the Mazzariello Labyrinth via Wilder Road, an easy hike that covers 2.9 miles (4.7 km) with an elevation gain of 726 feet (221 metres). This route takes about 1 hour and 34 minutes to complete. You will experience a mix of paved, unpaved, and gravel paths as the scenery shifts from wooded areas with live oak and eucalyptus to open grasslands, offering expansive views across the valleys.

While the trail is generally easy, be prepared for some sections that can be rocky or muddy, especially after rain; sturdy hiking boots are a good idea. Reaching the Mazzariello Labyrinth itself involves a moderate challenge with a steep uphill and downhill portion. Always check local conditions before you head out to ensure a smooth trip.

This trail is set within the unique volcanic landscape of Sibley Volcanic Regional Preserve. The main attraction is the Mazzariello Labyrinth, a large, spiral rock formation nestled in an old quarry, which provides a distinctive spot for quiet contemplation. From viewpoints like Round Top Views, you might even catch glimpses of Oakland, Berkeley, or the distant Sierra Nevada on clear days.

Embark on an easy hike through the Round Top, Volcanic, and Skyline Trail Loop, a 2.5-mile (3.9 km) route that takes about 1 hour and 13 minutes to complete. You will gain 479 feet (146 metres) in elevation as you traverse varied terrain, from somewhat rocky paths through eucalyptus groves to narrow trails in pine and oak woodlands. Keep an eye out for panoramic views from Round Top Views, where on clear days you might see Mount Diablo, Mount Tamalpais, and even the distant Sierras.

When planning your visit, remember that some sections of the trail have significant sun exposure, so it is wise to carry plenty of water and wear sunscreen. While no specific permits or fees are typically required for this loop, checking the Sibley Volcanic Regional Preserve visitor center for current conditions or any updates is always a good idea. You can also find informational displays and self-guided tour brochures there to enhance your experience.

This route offers a unique opportunity to explore the East Bay's ancient volcanic landscape, showcasing a diverse environment shaped by geological activity. The Volcanic Trail itself highlights various volcanic rocks, telling the story of the region's deep past. This trail is a great way to connect with the natural history of the area and enjoy a refreshing outdoor experience.