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Explore Mt. Tam trails with others who love the mountain.

Much of what we think we know about space comes from film and television, but Hollywood‰ЫЄs job is more often to entertain than to educate. In this presentation, we will sort fact from fiction, taking a tour through the worlds of Star Trek, Star Wars, and much more.

Enjoy a Saturday morning hike, guided by Friends of Mt. Tam volunteers.

Join us as we perform maintenance on this lovely trail and do much needed storm repair and drainage improvements.

Do you ever wish we could look back in time? We can, by studying the cosmic microwave background (CMB), which reveals the fiery early universe when it was only 0.003% of its present age. This talk will show how studying the CMB allows us to learn about the origin, composition, and ultimate fate of the universe.

Enjoy a Saturday morning hike, guided by Friends of Mt. Tam volunteers.

Connect with your mountain by spending a day improving trails! We will hike two miles to Nora Trail below historic West Point Inn. Our crew will repair a bridge, upgrade water bars, install a trail marker and do some light brushing.

A total solar eclipse is one of nature‰ЫЄs most magnificent spectacles. On August 21, 2017, for the first time in 38 years, the very narrow path of a total solar eclipse falls across the continental US. Come learn about total solar eclipses and how to view this one!

Enjoy a Saturday morning hike, guided by Friends of Mt. Tam volunteers.

Help study California's only freshwater turtle.