Cancel Search
  • Search by

    Sibley Volcanic Regional Preserve

    Oakland, California

    Sibley Volcanic Regional Preserve

    Sibley Volcanic Regional Preserve Professional Guide

    Detailed Trail Description from our Guidebook

    "What do the Sibley Volcanic Regional Preserve and Mount Saint Helens have in common? The subduction process that caused a volcanic explosion here ten million years ago eventually moved northward to cause the eruption of Washington’s Mount Saint Helens. Hiking among Monterey pines and on open grassy hills, you will see walls of the caldera left by the ancient blast, old river gravels, basalt lava flows, and varicolored “redbeds,” layers of oxidized iron explored worldwide for fossils. More recently, enthusiastic hikers have built a series of rock mazes in the preserve’s old quarries, complete with altars. Trails Surface: Mostly well-packed dirt trail that varies in width but with some loose gravel; finish on a paved path."

    Sibley Volcanic Regional Preserve Trail Photos

    Drop Photo or click to upload

    Sibley Volcanic Regional Preserve Trail Trip Reports

    Start your trip report for Sibley Volcanic Regional Preserve Trail
    Attach photos from your trip.
    Please Select a star rating.
    3 out of 5 stars3 out of 5 stars3 out of 5 stars3 out of 5 stars3 out of 5 stars
    icon1 Total
    Champaign, IL
    Pathfinder | 140 pts
    3 out of 5 stars3 out of 5 stars3 out of 5 stars3 out of 5 stars3 out of 5 stars
    This was a decent trail. Not very strenuous, except for a brief portion. Interesting for geology buffs. Great for dog-walkers. Not very crowded. The views were unremarkable, although there is an amazing view on the road just before you reach the Preserve.

    More Sibley Volcanic Regional Preserve Professional Guides

    Detailed Trail Descriptions from Our Guidebooks

    Thom Gabrukiewicz
    "This is a complicated geological area, what with volcanic dikes, mudflows, and lava flows. A eucalyptus forest covers most of the trails in this area, which has a violent past and a calm and comforting future. The Sibley Volcanic Regional Preserve was one of three initial parks established by the East Bay Regional Park District, way back in 1936. Even farther back, about 10 million years ago, lava flowed through the area, spreading north toward Inspiration Point and southeast to Morgana. Eventually, weather eroded the hard volcanic rock, which is now open for all to see. At the unstaffed visitor center, be sure to pick up the brochure detailing a self-guided trek through this volcanic wonderland." Read more

    Trail Information

    Nearby City
    Trail Guides

    Best Hikes Near San Francisco


    Best Hikes with Dogs: Bay Area & Beyond

    Trail Type
    Easy to Moderate
    Skill Level
    2 hours
    Open daily year-round
    Sibley Volcanic Regional Preserve
    Local Contacts
    USGS Oakland East
    Local Maps

    3 Members Completed

    I've done this

    Trail Log