The Ring Mountain Preserve is located near San Francisco Bay in Tiburan, California. Around 30 of the boulders in the Preserve have some sort of petroglyphs. On the summit of Ring Mountain there is said to be a ceremonial cairn. At least one mortero, or grinding slick, can also be found.
For turn-by-turn directions enter Phyllis Ellman Trailhead into your driving app.
Included with this post is the GPS file and map that we plan to use for our first visit. If you don't want to wait for us to get around to it feel free to try the GPS file and map for yourself. With no guarantee, of course, but they most often prove valuable for us.
Download GPS planning file:
