Saturday, September 29, 10:30 a.m.–noon
Presidio
Explore an extraordinary trail of wooden staircases and bridges in the Coastal Bluffs Tour: The Wildest Wilds of the Presidio. Learn about how the bluffs’ ecology has been shaped by the interface of land and sea and the dynamic forces of sun, wind, sand, and salt. Visit website for meeting location. Free, 415-561-4323, presidio.gov/events