The crunch of fallen leaves, the pop of red poison oak and the scent of matured golden grasses signal fall in the Bay Area. Learn more about the ghoulish glow of the jack-o-lantern mushroom and gear up to explore Purisima Creek Redwoods where all trails are now open. Find out how Midpen is working to improve visitor access for Rancho San Antonio and Windy Hill preserves. Plus, take a deep breath of that brisk autumn air on a docent-naturalist guided hike.