Ring Mountain Preserve

A mountain like nowhere else in the world

Rangers Recommend

  • On a clear day, enjoy stunning 360 degree views of the entire Bay Area.
  • The 385 acre preserve is famous for its geology. Rocks on the slopes display mineral amphibolite, eclogite, and tiny garnet crystal. Higher elevations hold serpentine. Turtle Rock, a massive boulder, sits between the mountain’s crests.
  • Hike Phyllis Ellman Loop Trail (1.76 miles) for a nature journey through oak woodland, wildflower strewn grasslands, and seasonal creeks.
  • At the end of Taylor Fire Road, find remnants of a Cold War military installation.
  • Dogs welcome, but must be leashed at all times.

Naturalist Notes

  • Ring Mountain has exceptional biological diversity and ecological value, including at least nine endemic and other sensitive and protected plant species.
  • The Tiburon mariposa lily, found nowhere else on earth, typically blooms in May.
  • The diverse array of geology is unique to this mountain.
  • Wildflowers abound in spring, including milkmaids, Fremont's camas, buttercups, and shooting stars.
  • A variety of raptors circle the mountainsides.
  • Keep an eye out for rock wrens – this is one of the few places in Marin where the birds can be seen all year.
  • Expand your knowledge of this special place. Become a Ring Mountain Wildflower Docent.
  • Check out the iNaturalist field guide. Add your own observations.


dog on leash
Dogs On Leash
Horseback Riding

A Special Collaboration

  • The Nature Conservancy purchased Ring Mountain in the early 1980s, managing it as a nature preserve until 1995 when it conveyed the property to Marin County to be preserved as public land.
  • The Nature Conservancy continues to hold a conservation easement over Ring Mountain, and has maintained an ongoing involvement in supporting Ring Mountain conservation values, including donor-funded initiatives.
  • The Nature Conservancy currently funds the Ring Mountain Stewardship and Habitat Restoration programs via a grant from the J. Lowell Groves bequest.  This work includes annual bio-monitoring and special projects related to rare native plants.
  • For more information about Ring Mountain stewardship, contact Coordinator Amanda Magallanes, (415) 473-5058.

Know Before You Go

  • Bikes and horses are welcome on fire roads, but not permitted on trails.
  • Hikers stay on roads and trails to preserve sensitive ecosystems, and to avoid trespassing on private property.
  • Be courteous and safety conscious when sharing roads and trails. Go slow and say hello.
  • Dress appropriately for the weather. Trails can be muddy during rainy season.
  • Bring water.
  • There are no restrooms at this location.
  • Steer clear of poison oak.
  • After an outing, check for ticks.