Join Ranger Lauren on a winter exploration to discover the wonders of mushrooms. We'll take a leisurely stroll through the Upper Meadow and Deer Camp Cutoff Trail, giving you a chance to observe the incredible world of decomposition and learn about the important role that fungi play in this process. The focus of this walk is on observation only and not the identification of individual species. Distance: approximately 1.5 miles; elevation gain: 450 ft. Appropriate for ages 12 and older. Friendly dogs are ok but must be leashed. Adverse weather or poor air quality may cancel; if in doubt, call (415) 473-2816 two hours before the event to confirm the status. Registration required.