Tiburon Mariposa Lily Ring Mountain

Canceled: The Nature of Ring Mountain

Sunday, May 31, 2020
9:30 a.m. - 1 p.m.
Free; RSVP Required.
Ring Mountain Open Space Preserve
Corte Madera, Marin County

Stay healthy and as always, thank you for your support


Join us as we hike the slopes of Ring Mountain in search of the rare and endemic Tiburon Mariposa Lily and other botanic jewels.

As we walk, we’ll hear the story of 19th-century pioneer John Reed and see evidence of even earlier habitation by Native Americans—pounding rocks and petroglyphs. We’ll also see unusual geological features and learn why geologists exclaim “Oh schist!” at the very mention of Ring Mountain.

Like most of you, we are closely monitoring COVID-19 news and information, and we’re following guidelines from the World Health Organization, CDC, and local government to stay healthy.

Based on that guidance, our small group outdoor hikes will continue this week. However, we ask that participants and leaders follow recommended public health guidelines and social distancing protocols to stay safe. View our protocols here.

Photo: Ken Lavin


Outing Leaders:
Cathy Petrick
Total Distance:
This is a moderate hike of about four miles with several hundred feet in elevation gain.
Weather Policy:

Rain cancels.

Where to Meet:

We will assemble at the gate for the Phyllis Ellman Trail off Paradise Drive.

From Highway 101 in Corte Madera, take the exit for Tamalpais Dr east. Go straight onto San Clemente, which merges into Paradise Dr after 0.4 miles. Follow Paradise Dr approximately 1 mile (go past Westward Dr). The gate is on the right.

Leaders Note:

Bring lunch and water. Dress in layers and wear good hiking shoes. Bring poles if you normally use them. There are no restrooms at the trailhead. As you drive down Paradise Drive, look for the athletic field on the left and stop there for restrooms. If you have any questions about this outing, email Ken Lavin or phone him at 415-543-6771 x321.

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